Prof. Dr. GÜL ALÇO

Radiation Oncology

MEDİPOL Acıbadem District Hospital
GÜL ALÇO

Birthplace

BURSA

Languages

ENGLISH

Medical Areas of Interest

  • Breast Cancer

  • Lung Cancer

  • Prostate Cancer

  • Gastrointestinal Cancers

  • Gynecological Cancers

  • Central Nervous System Tumors

  • Head and Neck Tumors

  • Soft Tissue and Bone Tumors

  • Adaptive Radiotherapy

  • Radiosurgery

Educations

2003

Kadir Has University Faculty of Medicine, Radiation Oncology

1995

Istanbul University, Faculty of Medicine

Publications

1. Articles published in internationally refereed journals (SCI & SSCI & Arts and Humanities)

1.1. S. İğdem, T. Ercan, G. Alço, F. Zengin, R. Özgüleş, G. Geceer, S. Okkan, A. Öber, S. Turkan. Dosimetric comparison of intensity modulated pelvic radiotherapy with 3D conformal radiotherapy in patients with gynecologic malignancies. Eur J Gynaec Oncol. 2009; 5: 547-551. [29 CITATIONS]

1.2. S. İğdem, H. Akpınar, G. Alço, F. Ağaçayak, S. Turkan, S. Okkan. Implantation of fiducial markers for image guidance in prostate radiotherapy: patient-reported toxicity. Br J Radiol. 2009; 82: 941-945. [60 CITATIONS]

1.3. S. İğdem, U. Abacıoğlu, İ. Çetin, G. Alço, Z. Akgün, M. Şengöz, N. Bekiroğlu, S. Turkan, S. Okkan. Impact of Percent Positive Random Biopsies on Biochemical Outcome in Prostate Cancer Patients Treated with External Beam Radiotherapy With or Without Androgen Deprivation. JBUON 2009; 14: 629-634. [3 CITATIONS]

1.4. G. Alço, Ş. İğdem, M. Dinçer, C. Tecimer, R. Şentürk, M. Vural, S. Okkan. Gemcitabine induced radiation recall myositis: Report of two cases and review of the literature. UHOD 2009;19:249-253. [5 CITATIONS]

1.5. G. Alço, Ş. İğdem, T. Ercan, M. Dinçer, R. Şentürk, S. Atilla, F. Zengin, S. Okkan. Coverage of axillary lymph nodes with high tangential fields in breast radiotherapy. Br J Radiol. 2010; 83: 1072-1076. [71 CITATIONS]

1.6. Ş. İğdem, G. Alço, T. Ercan, B. Ünalan, B. Kara, G. Geceer, C. Akman, F.O. Zengin, S. Atilla, S. Okkan. The application of positron emission tomography/computed tomography in radiation treatment planning: Effect on gross target volume definition and treatment management. Clinical Oncology 2010; 22:173-178. [19 CITATIONS]

1.7. T. Ercan, Ş. İğdem, G. Alço, F. Zengin, S. Atilla, M. Dinçer, S. Okkan. Dosimetric comparison of field-in-field intensity modulated radiotherapy technique with conformal radiotherapy techniques in breast cancer. Jpn J Radiol 2010; 28: 283-289. [59 CITATIONS]

1.8. Ş. İğdem, G. Alço, T. Ercan, M. Barlan, K. Ganiyusufoğlu, B. Ünalan, S. Turkan, S. Okkan. Insufficiency fractures after pelvic radiotherapy in patients with prostate cancer. Int J Radiat Oncol Biol Phys 2010; 77: 818-823. [94 CITATIONS]

1.9. G. Alco, M. Dincer. Are the standard tangential breast irradiation fields used in the ACOSOG Z0011 trial really covering the entire axilla? Ann Surg. 2013; 257 (1):e1 [12 CITATIONS]

1.10. G. Alco, S. Igdem, M. Dincer, V. Ozmen, S. Saglam, D. Selamoglu, Z. Erdogan, C. Ordu, K.N. Pilanci, A. Bozdogan, S. Yenice, C. Tecimer, G. Demir, G. Koksal, S. Okkan. Vitamin D levels in patients with breast cancer: Importance of dressing style. Asian Pac J Cancer Prev. 2014; 15(3): 1357-62. [35 CITATIONS]

1.11. OP. Erpolat, G. Alco, HB. Caglar, S. Igdem, A. Saran, N. Dagoglu, I. Aslay, Z. Ozsaran, S. Demirci, E. Keven, Y. Guney, M. Akmansu, D. Kilic, E. Bayman, D. Etiz, NM. Mandel. Comparison of hematologic toxicity between 3DCRT and IMRT planning in cervical cancer patients after concurrent chemoradiotherapy: A national multi-center study. Eur J Gynaecol Oncol. 2014; 35(1):62-6. [48 CITATIONS]

1.12. F Agacayak, A Ozturk, A Bozdogan, D Selamoglu, G Alco, C Ordu, KN Pilanci, R Killi, V Ozmen. Stereotactic vacuum-assisted core biopsy results for non-palpable breast lesions. Asian Pac J Cancer Prev. 2014;15(13):5171-4. [14 CITATIONS]

1.13. G. Alco, A. Bozdogan, D. Selamoglu, K.N. Pilancı, Ç. Ordu, S.Tuzlali, S. Okkan, M. Dincer, S. Igdem, G. Demir, V. Ozmen. Clinical and histopathological factors related to Ki-67 expression in breast cancer patients. Oncol Lett. 2015 Mar;9(3):1046-1054. [49 CITATIONS]

1.14. ZE Iyigun, D Selamoglu, G. Alco, KN Pilancı, C Ordu, F Agacayak, F Elbüken, A Bozdogan, S Ilgun, F Guler Uysal, V Ozmen. Bioelectrical impedance for detecting and monitoring lymphedema in patients with breast cancer. Preliminary results of the florence nightingale breast study group. Lymphat Res Biol. 2015 Mar;13(1):40-5. [40 CITATIONS]

1.15. KN Pilanci, G Alco, C Ordu, D Sarsenov, F Celebi, Z Erdogan, F Agacayak, S Ilgun, C Tecimer, G Demir, Y Eralp, S Okkan, V Ozmen. Is administration of trastuzumab an independent risk factor for developing osteonecrosis of the jaw among metastatic breast cancer patients under zoledronic acid treatment? Medicine 2015 May;94(18):e671. [22 CITATIONS]

1.16. F Çelebi, KN Pilancı, C Ordu, F Ağacayak, G Alco, S İlgün, D Sarsenov, Z Erdoğan, V Özmen. The role of ultrasonographic findings to predict molecular subtype, histologic grade, and hormone receptor status of breast cancer. Diagn Interv Radiol. 2015 Nov-Dec;21(6):448-53. [90 CITATIONS]

1.17. T. Ercan, S İğdem, G Alco. The effect of bladder contrast on dose calculation in volumetric modulated arc therapy planning in patients treated for postoperative prostate cancer. Jpn J Radiol. 2016 May;34(5):376-382. [4 CITATIONS]

1.18. AS Ilgun, D Sarsenov, Z Erdogan, Ç Ordu, F Celebi, KN Pilanci, A Ozturk, D Selamoglu, G Alco, F Aktepe, Y Eralp, S Tuzlali, V Ozmen. Receptor discordance rate and its effects on survival in primary and recurrent breast cancer patients. JBUON 2016; 21(6): 1425-1432 [19 CITATIONS]

1.19. ZE Iyigun, T Duymaz, AS Ilgun, G Alco, C Ordu, D Sarsenov, AE Aydin, FE Celebi, F Izci, Y Eralp, V Ozmen. Preoperative lymphedema related risk factors in early stage breast cancer. Lymphat Res Biol. 2018 Feb;16(1):28-35. [35 CITATIONS]

1.20. ZE Iyigun, F Agacayak, AS Ilgun, FE Celebi, C Ordu, G Alco, A Ozturk, T Duymaz, F Aktepe, V Ozmen, The role of eleastography in diagnosis and staging of breast cancer related lymphedema. Lymphat Res Biol. 2018 [23 CITATIONS]

1.21. NK Yıldırım, M Özkan, AS İlgün, D Sarsenov, G Alço, F Aktepe, N Kalyoncu, F İzci, D Selamoğlu, Ç Ordu, KN Pilancı, ZE İyigün, Y Eralp, V Özmen. Possible role of stress, coping strategies, and lifestyle in the development of breast cancer. Int J Psychiatry Med. 2018 May; 53 (3) : 207-220. [16 CITATIONS]

1.22. A Ozturk, G Alco, D Sarsenov, S Ilgun, C Ordu, U Koksal, KN Pilanci, Z Erdogan, F Izci, F Elbuken, F Agacayak, F Aktepe, V Ozmen, Synchronous and metachronous bilateral breast cancer: A long-term experience, JBUON 2018; 23(6): 1591-1600 [28 CITATIONS]

1.23. F Çelebi, F Agacayak, A Ozturk, S Ilgun, M Ucuncu, ZE Iyigun, Ç Ordu, KN Pilanci, G Alco, S Gultekin, E Cindil, G Soybir, F Aktepe, V Özmen. Usefulness of imaging findings in predicting tumor-infiltrating lymphocytes in patients with breast cancer. Eur Radiol 30, 2049–2057 (2020). [26 CITATIONS]

1.24. V Ozmen, S Ilgun, BC Ozden, A Ozturk, F Aktepe, F Agacayak, F Elbuken, G Alco, C Ordu, ZE Iyigun, E Hocaoglu, K Pilancı, G Soybir, T Ozmen. Comparison of breast cancer patients wo underwent partial mastectomy (PM) with mini latissimus dorsi flap (MLDF) and subcutaneous mastectomy with implant (M+I) regarding quality of life (QOL), cosmetic outcome and survival rates. World J Surg Onc 18, 87 (2020). [11 CITATIONS]

1.25. A. Ozturk A, S. Ilgun S, M Ucuncu, F Gachayev, C Ordu, G Alco, F Elbuken, Z Erdogan, T Duymaz, F Aktepe, G Soybir, V Ozmen. The effect of multifocal and multicentric tumours on local recurrence and survival outcomes in breast cancer. JBUON, 2021 Jan-Feb; 26(1):196-203. [5 CITATIONS]

1.26. KN Pilancı, Ç. Ünal, Ç. Ordu, E. Gökmen, M. Özdoğan, N. Güler, C. Uras, O. Demircan, A. Işıkdoğan, H. Kara, AB Oz, G. Alço, P. Saip, Y. Eralp, V. Özmen. Correlation between clinicopathologic factors and recurrence score according to TAILOR x risk category in patients with hormone receptor positive early stage breast cancer. JBUON, 2021

1.27. Akyuz Cim, E. F., Torlak, E., Unveren, G., Soybir, G. R. ., Ozmen, V., ErdoGan Iyigun, Z., Kayan Tapan, T., Yesilova, A., Alco, G., Yilmaz, E., Eyrenci, A., Elbuken, F., Ilgun, A. S., Duymaz, T., Ordu, C., & Pilanci, K. N. (2022). Effect of Fear of Covid-19 Infection on Functionality in Breast Cancer Patients in the Pandemic. Iranian Red Crescent Medical Journal, 24(2).

1.28. Ilgun, A. S., Alco, G., Ozturk, A., Celebi, F., Erdogan, Z., Ordu, C., Ozmen, Aktepe F, Soybir G, Özmen V. The effect of boost radiotherapy on local control in ductal carcinoma in-situ of the breast: Retrospective single-center experience with literature review. JBUON 2021; 26(6): 2298-2305.

1.29. Ozmen V, Ordu C, Ilgun AS, Unal C, Soybir G, Erdogan Z, Kayan Tapan T, Aktepe F, Alco G, Duymaz T, Ozmen T. The effects of vitamin D replacement on pathological complete response (pCR) in breast cancer patients receiving neoadjuvant systemic chemotherapy (NAC). Breast J. 2021 Dec;27(12):902-905.

1.30. Ozmen V, Caglayan AO, Yararbas K, Ordu C, Aktepe F, Ozmen T, Ilgun AS, Soybir G, Alco G, Tsaousis GN, et al: Importance of multigene panel test in patients with consanguineous marriage and family history of breast cancer. Oncol Lett 23: 118, 2022 [1 CITATION]

1.31. G. Alço, T. Ercan, Ş. İğdem, M. Barlan, M. Dinçer, S. Okkan. Deep inspiration breath hold in left sided tangential breast radiotherapy: Degree of lung inflation needed to compansate for cardiac motion. Int. J. Radiat. Res. April 2022; 20(2): 329-334

1.32. AS Ilgun, D Sarsenov, G Alço, A Ozturk, F Agacayak, F Elbuken, Z Erdogan,KN Pilanci, C Ordu, F Aktepe, G Soybir, V Ozmen. Long-term survival effects of preoperative breast MRI in patients with breast-conserving surgery. Acta Clin Croat 2022; 61:30-37

1.33. Ahmet Serkan Ilgun, Fatma Aktepe, Onur Gonullu, Nilgun Kapucuoglu, Kanay Yararbas, Gul Alco, Alper Ozturk, Filiz Elbuken Celebi, Zeynep Erdogan, Cetin Ordu, Caglar Unal, Tomris Duymaz, Gursel Soybir, Ekrem Yavuz, Sitki Tuzlali, and Vahit Ozmen. The effect of neoadjuvant chemotherapy on tumor-infiltrating lymphocytes in patients with breast cancer. Future Oncology 2022 18:29, 3289-3298

1.34. Ünal C¸ Özmen T, Ordu C¸ , Pilanci KN, Ilgün AS, Gökmen E, Almuradova E, Özdogan M, Güler N, Uras C, Kara H, Demircan O, Is¸ık S, Alc¸o G, Saip P, Aydın E, Duymaz T, Celebi F, Yararbas¸ K, Soybir G and Ozmen V (2023) Survival results according to Oncotype Dx recurrence score in patients with hormone receptor positive HER-2 negative early-stage breast cancer: first multicenter Oncotype Dx recurrence score survival data of Turkey. Front. Oncol. 13:1151733 [4 CITATIONS]

1.35. Ünal, Ç.; Ordu, Ç.; Özmen, T.; ˙Ilgun, A.S.; Çelebi, F.; Baysal, B.;Özkurt, E.; Duymaz, T.; Erdogan Iyigün, Z.; Kurt S, Öztürk MA, Pilancı KN, Alço G, Yararbas K, Kayan Tapan T, Guven DC, Soybir G, Ozmen V. Evaluation of Anti-Mullerian Hormone Levels, Antral Follicle Counts, and Mean Ovarian Volumes in Chemotherapy-Induced Amenorrhea among Breast Cancer Patients: A Prospective Clinical Study. Curr. Oncol. 2023, 30, 9217–9229.

1.36 Ç. Ünal, T. Özmen, AS İlgün, Ç Ordu, E Özkurt, N Ak, G Alço, ZE İyigün, S Kurt, T Duymaz, MA Öztürk, FE Çelebi, K Yararbaş, G Soybir, F Aktepe & V Özmen. MCM-2 Levels as a Potential Biomarker for Predicting High-Risk Breast Cancer Patients According to TAILORx Classification, Breast Cancer: Targets and Therapy, 2023, 659-669. [1 CITATION]

2. Articles published in other international refereed journals

2.1. G Alço, S Igdem, S Okkan, M Dincer, D Sarsenov, AS Ilgun, F Agacayak, F Elbüken, T Ercan, D Selamoglu, V Ozmen. Replacement of the tumor bed following oncoplastic breast‑conserving surgery with immediate latissimus dorsi mini‑flap. Mol Clin Oncol 5: 365-371, 2016 [27 CITATIONS]

2.2. C Ordu, KN Pilancı, N Avci, I Yıldız, G Alco, UI Koksal, F Celebi, C Tecimer, OG Demir. Prognostic Relevance of Sunitinib Toxicities and Comparison of Continuous vs Intermittent Sunitinib Dosing Schedule in Metastatic Renal Cell Cancer Patients. Contemporary Oncology, 2016, 20(2), 147-152. [1 CITATION]

2.3. D Sarsenov, AS Ilgun, C Ordu, G Alco, A Bozdogan, F Elbuken, KN Pilanci, F Agacayak, Z Erdogan, Y Eralp, M Dincer, V Ozmen. True Local Recurrences after Breast Conserving Surgery have Poor Prognosis in Patients with Early Breast Cancer. Cureus 2016,8 (3): e541. [14 CITATIONS]

2.4. ZE İyigün, KN Pilancı, FK Çabuk, S İlgün, C Ordu, T Duymaz, G Alco, F Celebi, D Sarsenov, F İzci, A Öztürk, F Ağaçayak, UI Köksal, F Aktepe, Y Eralp, V Ozmen. The Relationship between Bone Mineral Density and Estrogen Receptor Positivity in Patients with Breast Cancer. J of Breast Health 2016;12(3) :119-22

2.5. Ç Ordu, K McGuire, G Alco, KN Pilancı, UI Koksal, F Elbuken, Z Erdogan, F Agacayak, S Ilgun, D Sarsenov, A Ozturk, S Igdem, S Okkan, Y Eralp, M Dincer, V Ozmen. The Prognostic Impact of Molecular Subtypes and Very Young Age on Breast Conserving Surgery in Early Stage Breast Cancer. Cureus 8 (6): e633. [5 CITATIONS]

2.6. F. Çelebi, U Koksal, KN Pilancı, Ç Ordu, D Sarsenov, S Ilgun, FK Çabuk, G Alco, G Ozdil, Z Erdogan, V Ozmen. PET-MRI Findings of Two Patients with Breast Carcinoma before Treatment The Journal of Breast Health 2016; 12:88-90.

2.7. M Özkan, N Yıldırım, R Dişçi, AS İlgün, D Sarsenov, G Alço, F Aktepe, N Kalyoncu, F İzci, D Selamoğlu, Ç Ordu, KN Pilancı, Z Erdoğan, Y Eralp, V Özmen. Roles of Biopsychosocial Factors in the Development of Breast Cancer. Eur J Breast Health. 2017 Oct; 13(4): 206–212. [20 CITATIONS]

2.8. Ç Ordu Ç, KN Pilancı KN, G Alço, F Elbüken, UI Köksal, S İlgun, D Sarsenov, AE Aydın, A Öztürk, ZE Erdoğan, F Ağaçayak, F Çubuk, C Tecimer, Y Eralp, T Duymaz, F Aktepe, V Özmen. Prognostic significance of adjuvant chemotherapy induced amenorrhea in Luminal A and B subtypes. Eur J Breast Health. 2018 Jul 1;14(3):173-179. [4 CITATIONS]

2.9. F İzci, D Sarsenov, ZE Erdogan, AS Ilgun, E Celebi, G Alço, N Kocaman, C Ordu, A Ozturk, T Duymaz, KN Pilancı, F Elbuken, F Agacayak, F Aktepe, G Unveren, G Ozdem, Y Eralp, V Ozmen. Impact of presonality traits, anxiety, depression and hopelessness levels on quality of life in the patients with breast cancer. Eur J Breast Health. 2018 Apr 1;14(2):105-111. [70 CITATIONS]

2.10. T Duymaz, ZE Iyıgun, AS Ilgun, C Ordu, M Ucuncu, G Alco, A Ozturk, F Elbuken, F Aktepe, V Ozmen. The Effect of Mini-Latissimus Dorsi Flap (MLDF) Reconstruction on Shoulder Function in Breast Cancer Patients. Eur J Breast Health 2019; 15(3): 158-162 [3 CITATIONS]

2.11. F Çelebi, Ç Ordu, AS İlgün, A Öztürk, ZE Iyigün, G Alço, T Duymaz, F Aktepe, G Soybir, B Baysal, V Özmen. The Effect of Systemic Chemotherapy on Ovarian Function: A Prospective Clinical Trial. Eur J Breast Health 2020; 16: 177-182 [2 CITATIONS]

2.12. F İzci, G Özdem, AS İlgün, F Ağaçayak, T Duymaz, Z Erdoğan, G Alço, F Elbüken, A Öztürk, Ç Ordu, KC Ateşal, Öİ Doğan, F Aktepe, V Özmen. Pre-Treatment and Post-Treatment Anxiety, Depression, Sleep and Sexual Function Levels in Patients with Breast Cancer. Eur J Breast Health 2020; 16: 219-22 [28 CITATIONS]

2.13. Kaydıhan N, Alco G, Senocak MS, Bese N. Temporary Implant Irradiation: Survey Of Turkish Society of Radiation Oncology Breast Cancer Study Group. Eur J Breast Health 2021; 17(1), 21-28.

2.14. Sert F, Metcalfe E, Erkal EY, Alço G, Bakkal BH, Ozyigit G. Evaluation of the Radiation Oncologists’ Awareness and Needs about Geriatric Oncology: TROD-13-001 Study Turk J Oncol 2023, 383 (295-300)

3. Papers presented at international scientific meetings and published in proceedings

3.1. Ş. İğdem, K. Ganiyusufoğlu, G. Alço, T. Ercan, S. Okkan. Insufficiency fractures after pelvic radiotherapy for high risk or node positive prostate cancer patients, ESTRO 23, Amsterdam, October 2004. Radiother Oncol 2004;73 (Suppl 1): S375-376

3.2. Ş. İğdem, U. Abacıoğlu, İ. Çetin, G. Alço, Z. Akgün, M. Şengöz, S. Turkan, S. Okkan. Impact of percent positive biopsies on biochemical outcome in prostate cancer patients treated with or without androgen deprivation, ECCO 13, Paris, October 2005. Eur J Cancer 2005;3(2):233

3.3. G. Alço, Ş. İğdem, T. Ercan, S. Turkan, S. Okkan. Assessment of late morbidity after 3D conformal radiotherapy for prostate cancer, ECCO 13, Paris, October 2005. Eur J Cancer 2005;3(2):241

3.4. G. Alço, Ş. İğdem, B. Kara, B. Ünalan, T. Ercan, M. Altun, S. Turkan, S. Okkan. PET/CT guided IMRT in head and neck cancer: Impact on treatment planning and local control: Early results. ECCO 14, Barcelona, September 2007. Eur J Cancer 2007; 5(4):333

3.5. T. Ercan, S. İğdem, G. Alço, F. Zengin, R. Özgüleş, A. Öber, S. Turkan, S. Okkan. Dosimetric comparison of pelvic IMRT with 3D conformal radiotherapy in patients with gynaecologic malignancies. 9th biennial ESTRO meeting on physics and radiation technology for clinical radiotherapy. Barcelona, September 2007. Radiother Oncol 2007;84:S201

3.6. Ş. İğdem, G. Alço, B. Kara, B. Ünalan, T. Ercan, M. Altun, S. Turkan, M. Dinçer, S. Okkan. PET/CT guided IMRT in head and neck cancer: Impact on GTV delineation. International Meeting on Innovative Approaches in Head and Neck Cancer, Barcelona, February 2007. Radiother Oncol 2007;82:S320

3.7. Ş. İğdem, K. Ganiyusufoğlu, G. Alço, T. Ercan, S. Turkan, S. Okkan. Insufficiency fractures after pelvic radiotherapy in patients with prostate cancer. 7th Congress of BUON, İzmir, October 2008. J of BUON 2008;13, Suppl 1: S51

3.8. G. Alço, Ş. İğdem, M. Dinçer, T. Ercan, A. Öber, S. Okkan. Coverage of axillary nodes using high tangential fields in breast irradiation. 7th Congress of BUON, İzmir, October 2008. J of BUON 2008;13, Suppl 1: S19

3.9. G. Alço, M. Dinçer, Ş. İğdem, S. Köksal, S. Turkan, S. Okkan. Factors effecting seroma presence and clarity after breast conserving surgery. 7th Congress of BUON, İzmir, October 2008. J of BUON 2008;13, Suppl 1: S23

3.10. Ş. İğdem, T. Ercan, G. Alço, M. Dinçer, S. Turkan, S. Okkan. Intensity Modulated pelvic radiotherapy in gynecological malignancies: Early results. 7th Congress of BUON, İzmir, October 2008. J of BUON 2008;13, Suppl 1: S47

3.11. Ş. İğdem, M. Altun, G. Alço, T. Ercan, B. Kara, B. Ünalan, C. Tecimer, G. Köksal, S. Turkan, S. Okkan. PET/CT guided, dose painting IMRT for nasopharyngeal carcinoma. 50th ASTRO, Boston, September 2008. Int J Radiat Oncol Biol Phys 2008;72: S424-425

3.12. Ş. İğdem, U. Abacıoğlu, G. Alço, R. İbrahimov, A. Kefeli, İ. Çetin, S. Turkan, S. Okkan. Postoperative radiotherapy for prostate cancer: Sooner or later? ASCO May 2009, Orlando. J Clin Oncol 2009;27 (suppl; abstr e16157),

3.13. T. Ercan, Ş.Igdem, G. Alço, F. Zengin, R. Özgüleş, S. Atilla, M. Dinçer, S. Okkan. Dosimetric comparison of field in field intensity modulated radiotherapy technique with conformal radiotherapy techniques in breast cancer. 10th Biennial ESTRO Physics Conference, Maastricht 2009. Radiother Oncol 92;(Suppl 1):S 201

3.14. Ş. İğdem, M. Altun, G. Alço, T. Ercan, C. Tecimer, G. Köksal, K. Gürses, G. Demir, S. Okkan. Whole field simultaneous boost IMRT in nasopharyngeal cancer. 52nd ASTRO, San Diego, October 2010. Int J Radiat Oncol Biol Phys 2010, Vol. 78(3), Suppl, S478.

3.15. A. Dirier, U. Abacioglu, S. Okkan, Y. Pak, Y.Y. Guney, G. Aksu, S. Soyuer, B. Oksuzoglu, D. Meydan, B. Zincircioglu, P.F. Yumuk, G. Alco, E. Keven, A.R. Ucer. Radiotherapy with or without temozolomide in elderly glioblastoma patients: performance or age as a surrogate? EANO, Maastricht, August 2010. Neuro Oncol 2010 iv 42.

3.16. Ş. İğdem, F. Hanağası, C. Solakoğlu, G. Alço, T. Ercan, M. Altun, S. Turkan, S. Okkan. Dosimetric and clinical evaluation of brachial plexopathy in patients with head and neck cancer treated with intensity modulated radiotherapy. ESTRO, London, May 2011. Radiother Oncol 2011, Vol. 98 Suppl 1, Page S21.

3.17. H Akbulut, MK Altundag, P Saip, HS Coskun, C Camci, M Ozkan, S Paydas, N Zengin, G Alco, M Aliustaoglu, G Basaran, D Yamac, I Yucel, E Goker, E Yaman, A Isikdogan, YY Ozisik, E Topuz, M Ozdogan, F Icli. The changing pattern of risk factors and disease characteristics of breast cancer in Turkey: A cross-sectional study of a Turkish oncology group (BREASTTURK). ASCO, Chicago 2011. J Clin Oncol 29: 2011 (suppl; abst e12007)

3.18. Ş. İğdem, G. Alço, F. Öner Dinçbaş, U. Abacıoğlu, D. Kılıç, D. Yalman, O. Eliçin, R. İbrahimov, S. Demirci, S. Okkan. Patient reported toxicity in men treated with 3D conformal techniques for localized prostate cancer: A Turkish Oncology Group (TOG) study. 53rd ASTRO, October 2011, Miami. Int J Radiat Oncol Biol Phys 2011;81 (Suppl):S679.

3.19. E.K. Tezcanli, A. Ucuncu, S. Sarihan, A. Aksu, C. Eroglu, G. Alco, S. Kamer, M. Ekenel, S. Aytac Arslan, U. Abacioglu. Does the Timing of Radiotherapy Impact Survival of Glioblastoma Multiforme Patients? ASTRO 53rd Annual Meeting, October 2011 Miami. Int J Radiat Oncol Biol Phys, Volume 81, Issue 2, Suppl, S276-S277.

3.20. G. Alco, S. Igdem, M. Dincer, V. Ozmen, G. Demir, G. Koksal, C. Tecimer, D. Selamoglu, K. Pilanci, S. Okkan. 25-hydroxy vitamin D levels in patients with breast cancer: Importance of dressing style. ECCO 17, September, Amsterdam. Eur J Cancer 2013;49(2):427

3.21. Z.E. İyigun, D. Selamoglu, G. Alco, K.N. Pilancı, S. Tuzlali, I.D. Ozacmak, F.G. Uysal, V. Ozmen. Monitoring lymphedema with bioelectrical impedance analysis after breast cancer therapy: Preliminary results. 12th Congress of European Forum for research in Rehabilitation 11-14 September 2013, İstanbul. Turk J Phys Med Rehab 2013:(59 Suppl 2); 105.

3.22. FK. Çabuk, GB. Doğusoy, I. Çoban, N. Akdur,N. Başsüllü, G. Köksal, G. Alço. Correlation of p16 expression with clinicopathologic features in oropharengeal carcinoma. 26th European Congress of Pathology, 30 August-3 September 2014, Virchows Arch (2014) 465 (Suppl 1): S1-379.

3.23. G. Alço, S Igdem, S Okkan, M Dinçer, F Agacayak, D Selamoglu, S Ilgun, V Ozmen. Replacement of tumor bed after oncoplastic breast-conserving surgery with immediate latissimus dorsi mini-flap. 56. ASTRO Congress, 14-17 September 2014, International Journal of Rad Onc Biol Physics 2014, Vol. 90, Suppl, S236-7, Poster presentation (P2048)

3.24. C. Ordu, A. Bozdogan, G. Alco, KN Pilanci, D. Selamoğlu, F. Ağaçayak, Z.Erdoğan, S. İlgün, F. Elbuken, S. İgdem, S. Okkan, V. Ozmen. Do young age and triple negative molecular subtype have a negative effect on survival in patients with early stage breast cancer? Ann Oncol, 2014;25 (Suppl 4): iv85- iv109. Poster presentation, 39th ESMO Congress, 26-30 September 2014, Madrid, Spain.

3.25. KN Pilancı, G Alço, Ç Ordu, F Çelebi, D Sarsenov, ZE İyigün, F Ağaçayak, AS İlgün, V. Ozmen. Does trastuzumab increase ONJ development due to zoledronic acid treatment in breast cancer? St Gallen international Breast Cancer Conference, 2015 The Breast 24S1 (2015) S26–S86. Poster presentation (P115)

3.26. C Ordu, G Alço, KN Pilancı, S. İlgün, D. Sarsenov, F. Elbüken, Z Erdogan, F Agacayak, G Demir, C. Tecimer, V. Ozmen. Does adjuvant chemotherapy induced amenorrhea effect survival in operated premenopausal breast cancer patients? European Cancer Congress 2015, 25-29 September 2015, Vienna. Poster presentation.

3.27. V. Ozmen, D. Sarsenov, T. Ozmen, S. Ilgun, G. Alco, C. Ordu, F. Agacayak, F. Elbuken, Z. Erdogan, KN Pilanci. Mini latissimus dorsi flap increases breast conserving surgery rate in early stage breast cancer patients. 38th SABCS, December 8-12, 2015, San Antonio, Texas. Poster presentation (P2-12-17)

3.28. F. Elbuken, C. Ordu, D. Sarsenov, S. Ilgun, K. Pilanci, Z.Erdogan, F. Agacayak, G. Alco, A. Ozturk, Y. Eralp, B. Baysal, V. Ozmen. Follow-up of chemotherapy induced changes in anti-Mullerian hormone, antral follicle number and ovary volume in premenopausal breast cancer patients. Poster presentation (203P) ESMO, 7-11 October 2016. Ann Oncol 27 (Suppl 6): vi43-vi67, 2016.

3.29. C Ordu, KN Pilancı, F Elbüken, G Alço, Üİ Köksal, S. İlgün, D Sarsenov, AE Aydın, A Öztürk, Zİ Erdoğan, F Ağaçayak, C Tecimer, Y Eralp, F Aktepe, V Özmen. The prognostic impact of chemotherapy induced amenorrhea in women treated with early stage breast cancer. ESMO 2017 Congress, Abstract 2598,11 September 2017

3.30. C Ordu, F Gachayev, F Elbuken, B Baysal, KN Pilancı, G Alco, AS İlgun, M. Ucuncu, A. Ozturk, Z Erdogan, F Agacayak, G Ozdem, T Kayan, T Uyar, E Hocaoğlu, G Soybir, F Aktepe, V Ozmen. Anti-Müllerian hormone (AMH) levels and anrtal follicle counts (AFC) may predict ovarian reserves before systemic chemotherapy (SC) in women with breast cancer (BC): A prospective clinical study. Ann Oncol, Suppl 5, October 2019

4. National/international books written or book chapters

4.1. Reirradiation in Bone Metastases, G. Alço

4.2. Reirradiation in Bone Metastases, Target Volume Dose-Plan Recommendations,

G. Alço – AN Demiral.

4.3. Reirradiation in prostate cancer, G. Alço – Ş.İğdem.

4.4 Radiotherapy in the Geriatric Breast Cancer Patient, G. Alço, Türkiye Klinikleri Special Issue

4.5 Personalized Radiotherapy in Breast Cancer, G. Alço, Türkiye Klinikleri Special Issue

4.6 Alternative methods to breast brachytherapy. G. Alço – Tülay Ercan, Brachytherapy Google E-Book (in publication process)

4.7 PET/MR and Its Applications in Radiotherapy, G. Alço, Journal of Nuclear Medicine Seminars. 2023:9=195-201.

4.8 Geriatric Radiotherapy Guide, Zeus Kitabevi

5. Articles published in national refereed journals

5.1. G. Alço, T. Ercan, Ş. İğdem, F. Zengin, R. Özgüleş, S. Okkan. Comparison of two different techniques in internal mammary region irradiation. Journal of Breast Diseases 2005;12(3):78-84

5.2. G. Alço, Ş. İğdem, S. Turkan, S. Okkan. Radiotherapy outcomes and prognostic factors in high-grade glial tumors: Metropolitan Hospital Experience. Turkish Journal of Oncology 2008;23(1):12-19

5.3. G. Alço, M. Dinçer, T. Ece, Ş. İğdem, S. Okkan. Bronchiolitis obliterans organizing pneumonia syndrome developing after breast cancer radiotherapy. Journal of Breast Health 2009;5(3): 157-161

5.4. Ş. İğdem, G. Alço, T. Ercan, H. Akpınar, S. Turkan, S. Okkan. Dosimetry and acute toxicity in prostate cancer patients treated with image-guided intensity modulated radiotherapy: Early results of the first 100 cases. Turkish Journal of Oncology 2009;24:115-121 [1 CITATION]

5.5. Ş. İğdem, G. Alço. Testicular tumor: Innovations in radiotherapy. Urooncology Bulletin 2013; 12(3): 210-213

5.6. Y. Eralp, L. Kılıç, G Alço, G. Başaran, M. Doğan, D. Dinçol, S. Demirci, F. İçli, The outcome of patient with triple negative breast cancer: the Turkish Oncology Group experience. The Journal of Breast Health 2014, 10 (4) 209 [11 CITATIONS]

5.7. S. Karadereler, B Göker, G Alço, O Arıca, MK Hamamcıoğlu, Talat Kiriş. Radiosurgery treatment in trigeminal neuralgia. Turkish Neurosurgery Journal 2014, Volume: 24, Issue: 2, 85-94 [2 CITATIONS]

5.8. G. Alco, S. İğdem. Rising PSA after Radical Prostatectomy: Radiotherapy in High-Risk Group: Early? Late? Urooncology Bulletin, 2015, 14 (2), 161-164.

5.9. KN. Pilancı, G. Alço, Ç Ordu, R. Çiftçi, ZE. İyigün, F. Çelebi, UI. Köksal, D. Sarsenov, S. İlgün, F. Ağaçayak, V. Özmen. An important side effect of zoledronic acid treatment in metastatic breast cancer: renal failure. Ş.E.E.A.H Medical Bulletin 2016; 50(3): 205-9 [2 CITATIONS]

5.10. Filiz Ağacayak, Güzide Özdil, Serkan İlgün, Tural Mammadov, Filiz Elbüken, Gül Alço, Zeynep Erdogan, Filiz İzci, Alper Öztürk, Kezban Nur Pilancı, Çetin Ordu, Tomris Duymaz, Fatma Aktepe, Vahit Özmen The role of shear wave elastography in determining molecular subtypes in breast cancer Demiroğlu Bilim University Florence Nightingale Medical Journal 2021, 7/ 2 146-154

6. Papers presented at national scientific meetings and published in proceedings

6.1. Ş. İğdem, A. Çelikoyar, G. Alço, T. Temizer, T. Ercan. Acute side effects in prostate cancer patients treated with conformal radiotherapy. 4th National Radiation Oncology Congress, Abstract Book, Bursa, March 2000

6.2. Ş. İğdem, A. Çelikoyar, G. Alço, T. Ercan. Acute and Late Side Effects in Prostate Cancer Patients Treated with Three-Dimensional Conformal Radiotherapy. (ORAL PRESENTATION - Best Oral Presentation Award). 5th National Radiation Oncology Congress, Program and Abstract Booklet, Kuşadası, April 2002

6.3. Ş. İğdem, R. Coşar, G. Alço. Coexistence of Meningioma and Breast Cancer: Case Report. 5th National Radiation Oncology Congress, Program and Abstract Booklet, Kuşadası, April 2002

6.4. Ş. İğdem, G. Gürsoy, S. Turkan, M. Dinçer, A. Öber, S. Okkan. Our Results in Breast Cancer Patients Treated with Adjuvant Radiotherapy Using Three-Dimensional Treatment Planning After Breast Conserving Surgery. VII. National Breast Diseases Congress, Course and Abstract Book, Antalya, October 2003

6.5. Ş. İğdem, G. Alço, T. Ercan. Radiotherapy after radical prostatectomy. XV. National Cancer Congress, Program and Abstract Book, Antalya, April 2003

6.6. Ş. İğdem, G. Gürsoy, S. Turkan, A. Öber, S. Koca, M. Dinçer, T. Ercan, S. Okkan. Toxicity Evaluation in Prostate Cancer Patients Treated with Three-Dimensional Conformal Radiotherapy, VI. National Radiation Oncology Congress, Lecture and Abstract Book, Antalya, April 2004

6.7. Ş. İğdem, G. Gürsoy, F. Zengin, R. Yapar, T. Ercan, S. Okkan. Set-up errors in prostate cancer patients immobilized with thermoplastic masks treated with three-dimensional conformal radiotherapy. VI. National Radiation Oncology Congress, Lecture and Abstract Book, Antalya, April 2004

6.8. Ş. İğdem, T. Ercan, M. Özşahin, G. Alço, K. Karaman. Three-Dimensional Conformal Radiotherapy in Neck Treatment in Head and Neck Cancer Patients. Multidisciplinary Approach in Head and Neck Cancers, Çeşme, September 2004,

6.9. Ş. İğdem, U. Abacıoğlu, İ. Çetin, G. Alço, Z. Akgün, M. Şengöz, S. Turkan, S. Okkan. Effect of positive biopsy rate on biochemical control in 334 prostate cancer patients treated with external radiotherapy, 16th National Cancer Congress, Program and Abstract Book, Antalya, April 2005.

6.10. G. Alço, Ş. İğdem, T. Ercan, H. Akpınar, F. Ağaçayak, S. Turkan, S. Okkan. Immobilization with gold fiducial markers in prostate cancer radiotherapy. 16th National Cancer Congress, Program and Abstract Book, Antalya, April 2005.

6.11. Ş. İğdem, G. Alço, T. Ercan, S. Turkan, S. Okkan. Biochemical disease-free survival following adjuvant or salvage radiotherapy after radical prostatectomy, 16th National Cancer Congress, Program and Abstract Book, Antalya, April 2005.

6.12. Ş. İğdem, T. Ercan, G. Alço, L. Ulusoy, B. Ünalan, S. Turkan, S. Okkan. PET/CT-based planning in non-small cell lung cancer: Case report. 16th National Cancer Congress, Program and Abstract Book, Antalya, April 2005.

6.13. G. Alço, T. Ercan, Ş. İğdem, F. Oral, R. Yapar, S. Okkan. Comparison of two different techniques in internal mammary lymph node region irradiation in breast cancer patients. 8th National Breast Diseases Congress, Congress Abstract Book, İstanbul, September 2005.

6.14. Ş. İğdem, U. Abacıoğlu, İ. Çetin, G. Alço, Z. Akgün, M. Şengöz, S. Turkan, S. Okkan. Effect of positive biopsy rate on biochemical control in prostate cancer patients treated with external radiotherapy. 1st National Oncology Research Workshop and TOG Subworking Groups Meeting, Workshop Book, Ankara, December 2005. (ORAL PRESENTATION)

6.15. Ş. İğdem, T. Ercan, G. Alço, F. Oral, R. Yapar, S. Turkan, S. Okkan. Comparison of intensity modulated radiotherapy and three-dimensional conformal radiotherapy plans in prostate cancer. 7th National Radiation Oncology Congress, Program, Paper and Lecture Abstract Book, Fethiye, April 2006. (ORAL PRESENTATION)

6.16. Ş. İğdem, T. Ercan, G. Alço, B. Kara, M. Altun, S. Turkan, S.Okkan. Intensity modulated radiotherapy in head and neck cancers: Preliminary results. 7th National Radiation Oncology Congress, Program, Paper and Lecture Abstract Book, Fethiye, April 2006. (ORAL PRESENTATION)

6.17. Ş. İğdem, G. Alço, B. Ünalan, G. Kantürk, B. Kara, G. Geceer, C. Akman, S. Okkan. PET/CT simulation in treatment planning. Symposium on PET and Molecular Imaging in Clinical Oncology, Ankara, December 2007. Turkish Journal of Nuclear Medicine 2007;16(3):85

6.18. Ş. İğdem, T. Ercan, G. Alço, F. Zengin, R. Yapar, A. Öber, S. Turkan, S. Okkan. Comparison of three-dimensional conformal radiotherapy and intensity modulated radiotherapy in gynecological tumors. 17th National Cancer Congress, Program and Abstract Book, Antalya, April 2007. (ORAL PRESENTATION)

6.19. Ş. İğdem, T. Ercan, G. Alço, C. Tecimer, G. Köksal, M. Altun, S. Turkan, S. Okkan. Acute side effects in head and neck cancer patients treated with intensity modulated radiotherapy. 17th National Cancer Congress, Program and Abstract Book, Antalya, April 2007. (ORAL PRESENTATION)

6.20. G. Alço, Ş. İğdem, M. Dinçer, T. Ercan, A. Öber, S. Okkan. Axillary lymph node region doses in breast irradiation with high tangential fields. İstanbul Breast Cancer Conference and National Breast Cancer Consensus Meeting, Lecture and Abstract Book, İstanbul, October 2008.

6.21. G. Alço, M. Dinçer, Ş. İğdem, S. Köksal, S. Turkan, S. Okkan. Factors affecting seroma presence and appearance after breast conserving surgery. İstanbul Breast Cancer Conference and National Breast Cancer Consensus Meeting, Lecture and Abstract Book, İstanbul, October 2008.

6.22. Ş. İğdem, G. Alço, T. Ercan, C. Tecimer, G. Köksal, M. Altun, S. Turkan, S. Okkan. Intensity modulated radiotherapy in nasopharyngeal cancer: Metropolitan Hospital experience. 8th National Radiation Oncology Congress, Program, Paper and Lecture Abstracts Book, Antalya, April 2008. (ORAL PRESENTATION)

6.23. Ş. İğdem, G. Alço, T. Ercan, H. Akpınar, S. Turkan, S. Okkan. Dosimetry and acute toxicity in prostate cancer patients treated with image-guided intensity modulated radiotherapy: Early results of the first 100 cases. 8th National Radiation Oncology Congress Program, Paper and Lecture Abstracts Book, Antalya, April 2008. (ORAL PRESENTATION)

6.24. Ş. İğdem, G. Alço, H. Akpınar, F. Ağaçayak, S. Turkan, S. Okkan. Gold fiducial markers placed under transrectal ultrasound guidance for prostate localization during external radiotherapy: Metropolitan Hospital experience. 8th National Radiation Oncology Congress Program, Paper and Lecture Abstracts Book, Antalya, April 2008. (ORAL PRESENTATION)

6.25. Ş. İğdem, G. Alço, T. Ercan, M. Altun, B. Ünalan, M. Barlan, S. Turkan, S. Okkan. Determination of biological target volume with FDG-PET in nasopharyngeal cancer radiotherapy: Early results. XVIII. National Cancer Congress, Program and Abstract Book, Antalya, April 2009. (ORAL PRESENTATION)

6.26. T. Ercan, Ş. İğdem, M. Dinçer, G. Alço, F.Oral-Zengin, R. Özgüleş, S. Yıldırım, S. Okkan. Dosimetric comparison of field-in-field intensity modulated radiotherapy technique with 3D conformal radiotherapy techniques in breast cancer. XVIII. National Cancer Congress, Program and Abstract Book, Antalya, April 2009. (ORAL PRESENTATION)

6.27. G. Alço, Ş. İğdem, M. Dinçer, S. Turkan, A. Öber, S. Okkan. Breast conserving surgery and postoperative radiotherapy in T1N0M0 breast cancer patients. XVIII. National Cancer Congress, Program and Abstract Book, Antalya, April 2009. (ORAL PRESENTATION)

6.28. Ş. İğdem, G. Alço, U. Abacıoğlu, R. İbrahimov, İ. Çetin, F. Öner-Dinçbaş, A. Ay, S. Turkan, S. Okkan. Postoperative radiotherapy in prostate cancer. XVIII. National Cancer Congress, Program and Abstract Book, Antalya, April 2009. (ORAL PRESENTATION)

6.29. H. Çağlar, Ş. İğdem, E. Tezcanlı, G. Alço, A. Kefeli, B. Atasoy, F. Dane, U. Abacıoğlu. Multimodality treatment outcomes and prognostic factor analyses in limited stage small cell lung cancer. XVIII. National Cancer Congress, Program and Abstract Book, Antalya, April 2009. (ORAL PRESENTATION)

6.30. S. Kamer, A. Haydaroğlu, U. Abacıoğlu, A.Ü. Kefeli, G. Alço, N. Özşeker, B. 7.6.Zincircioğlu, S. Sarıhan, Y. Anacak. Multicenter retrospective evaluation of prognostic factors affecting survival in oligodendrogliomas, TOG Central Nervous System Tumors Subgroup. XVIII. National Cancer Congress, Program and Abstract Book, Antalya, April 2009.

6.31. G. Alço, Ş. İğdem, M. Dinçer, M. Barlan, T. Ercan, S. Okkan. Evaluation of tumor bed shrinkage during whole breast irradiation with repeated CT planning. X. National Breast Diseases Congress, Program and Abstract Book, İzmir, September 2009. (ORAL PRESENTATION)

6.32. Ş. İğdem, G. Alço, U. Abacıoğlu, İ.A. Çetin, F. Ağaoğlu, E. Darendeliler, F. Öner Dinçbaş, S. Koca, S. Okkan. Acute and late side effects in prostate cancer patients treated with postoperative radiotherapy. 9th Urooncology Congress, Ankara, November 2009.

6.33. Ş. İğdem, G. Alço, T. Ercan, H. Akpınar, S. Okkan. Image-guided intensity modulated radiotherapy in prostate cancer: Early results. 9th Urooncology Congress, Congress Book, Ankara, November 2009. (ORAL PRESENTATION)

6.34. Y. Eralp, G. Alço, G. Başaran, M. Doğan, D. Dinçol, S. Demirci, F. İçli, H. Onur, P. Saip, E. Topuz, A. Haydaroğlu. Prognosis in triple negative breast cancer patients: Is there an ethnic subgroup with a better course? Turkish Oncology Group experience. 5th National Oncology Research Workshops and Courses, Workshop Book, Antalya, November 2009.

6.35. Ş. İğdem, C. Solakoğlu, T. Ercan, G. Alço, M. Altun, S. Okkan. Dosimetric analysis of the brachial plexus in head and neck cancer patients treated with intensity modulated radiotherapy. 9th National Radiation Oncology Congress, Paper and Lecture Abstracts Book, Cyprus, April 2010. (ORAL PRESENTATION)

6.36. A. Dirier, U. Abacıoğlu, S. Okkan, Y. Pak, Y.Y. Güney, G. Aksu, S. Soyuer, B. Öksüzoğlu, A.D. Meydan, S.B. Zincircioğlu, P.F. Yumuk, G. Alço, E. Keven, A.R. Üçer. Radiotherapy +/- temozolomide in elderly Glioblastoma patients: Treatment outcomes and prognostic factors. 9th National Radiation Oncology Congress, Paper and Lecture Abstracts Book, Cyprus, April 2010. (ORAL PRESENTATION)

6.37. B.M. Atasoy, G. Alço, E. K. Sağlam, N. Ş. Beşe, M. Garipağaoğlu, M. Fayda, A. Balkanay, İ. Kabalay, Ş. İğdem, U. Abacıoğlu. Evaluation of survival outcomes, late quality of life and sphincter function in patients with anal canal tumors treated with curative or postoperative radiotherapy. 9th National Radiation Oncology Congress, Paper and Lecture Abstracts Book, Cyprus, April 2010.

6.38. Ş. İğdem, G. Alço, T. Ercan, H. Akpınar, S. Okkan. Image-guided intensity modulated radiotherapy in prostate cancer: early results. 9th National Radiation Oncology Congress, Paper and Lecture Abstracts Book, Cyprus, April 2010.

6.39. Ş. İğdem, G. Alço, T. Ercan, S. Okkan. Toxicity analysis of pelvic intensity modulated radiotherapy with simultaneous integrated boost technique in prostate cancer. 9th National Radiation Oncology Congress, Paper and Lecture Abstracts Book, Cyprus, April 2010.

6.40. G. Alço, Ş. İğdem, T. Ercan, M. Dinçer, S. Okkan. Early side effects in gynecological tumor patients treated with intensity modulated pelvic radiotherapy. 9th National Radiation Oncology Congress, Paper and Lecture Abstracts Book, Cyprus, April 2010.

6.41. Ş. İğdem, F. Zengin, G.Coşkun, N. Yaşar, S. Atilla, T. Ercan, G. Alço, S. Okkan. Physician-technician concordance in image-guided radiotherapy applications. 9th National Radiation Oncology Congress, Paper and Lecture Abstracts Book, Cyprus, April 2010.

6.42. G. Alço, Ş. İğdem, T. Ercan, M. Dinçer, F. Zengin, S. Atilla, S. Okkan. Intensity modulated radiotherapy in anal canal cancer. 3rd National Gastroenterology Congress, Congress Proceedings Book, Antalya, April 2011.

6.43. Ş. İğdem, Z. Arıcan, S. Demirci, U. Abacıoğlu, G. Alço, F. Yaman, A. Ay, H. Alanyalı, D. Yalman, R. İbrahimov, E. Darendeliler, F. Ö. Dinçbaş, S. Okkan. Postoperative radiotherapy in prostate cancer: Biochemical control and late side effect analysis: TOG Genitourinary Cancers subgroup study, 19th National Cancer Congress, Abstract Proceedings, Antalya, April 2011. (ORAL PRESENTATION)

6.44. Ş. İğdem, G. Alço, S. Okkan, F. Öner Dinçbaş, U. Abacıoğlu, D. Kılıç, D. Yalman, O. Eliçin, R. İbrahimov, S. Demirci. Evaluation of late side effects in patients treated with conformal radiotherapy techniques for localized prostate cancer: TOG side effects subgroup study. 19th National Cancer Congress, Abstract Proceedings, Antalya, April 2011. (ORAL PRESENTATION)

6.45. Ş. İğdem, F. Hanağası, C. Solakoğlu, G. Alço, T. Ercan, M. Altun, S. Turkan, S. Okkan. Brachial plexopathy in head and neck cancer patients treated with intensity modulated radiotherapy. 19th National Cancer Congress, Abstract Proceedings, Antalya, April 2011. (ORAL PRESENTATION)

6.46. E. Tezcanlı, A. Üçüncü, S. Sarıhan, A. Aksu, C. Eroğlu, G. Alço, S. Kamer, M. Ekenel, S.A. Aslan, F. Akman, A. Kuzhan, B. Zincircioğlu, G. Aksu, A. Hiçsönmez, Z. Akgün, U. Abacıoğlu. Does the Interval Between Surgery and Radiotherapy Matter in Glioblastoma Multiforme Patients? TOG-CNS Tumors Group Study. 19th National Cancer Congress, Abstract Proceedings, Antalya, April 2011. (ORAL PRESENTATION)

6.47. P.Ö. Erpolat, G. Alço, Ş. İğdem, N. Dağoğlu, I. Aslay, Z. Özsaran, S. Demirci, E. Keven, Y. Güney, M. Akmansu, D. Kılıç, E. Bayman, D. Etiz, N.M. Mandel. Identification of dosimetric parameters causing hematologic toxicity in cervical cancer patients treated with concurrent cisplatin and pelvic radiotherapy: Turkish Oncology Group Gynecological Tumors Subgroup Study. 10th National Radiation Oncology Congress, Congress Book, Antalya, April 2012. (ORAL PRESENTATION)

6.48. Ş. İğdem, M. Altun, G. Alço, T. Ercan, B. Ünalan, S. Turkan, S. Okkan. Prognostic significance of FDG-PET in nasopharyngeal cancer patients treated with IMRT. 10th National Radiation Oncology Congress, Congress Book, Antalya, April 2012. (ORAL PRESENTATION)6

6.49. T. Ercan, Ş. İğdem, M. Özşahin, G. Alço, S. Okkan. Carotid-sparing IMRT in early stage laryngeal cancer: A dosimetric study. 10th National Radiation Oncology Congress, Congress Book, Antalya, April 2012.

6.50.G. Alço, Ş. İğdem, T. Ercan, M. Dinçer, S. Turkan, S. Okkan. Simultaneous integrated boost application in cervical cancer patients treated with intensity modulated pelvic radiotherapy: Dosimetric findings and acute side effects. 10th National Radiation Oncology Congress, Congress Book, Antalya, April 2012.

6.51. G. Alço, T. Ercan, Ş.İğdem, M. Dinçer, M. Barlan, F.O. Zengin, S. Okkan. Dosimetric differences between free breathing and deep inspiration breath hold in respiration-monitored left breast field-in-field tangential irradiation. 20th National Cancer Congress, Congress Book, Antalya, April 2013. (ORAL PRESENTATION)

6.52. G. Alço, M. Dinçer, Ş. İğdem, T. Ercan, S. Okkan. Early side effect results and patient satisfaction in cases treated with hypofractionated whole breast radiotherapy. 20th National Cancer Congress, Abstract Proceedings Book, Antalya, April 2013. (ORAL PRESENTATION)

6.53. G. Alço, Ş.İğdem, M. Dinçer, V. Özmen, G. Demir, G. Köksal, C. Tecimer, S. Sağlam, K.N. Pilancı, S. Yenice, S. Tuzlalı, Z. Erdoğan, F. Uysal, D. Selamoğlu, İ.D. Özaçmak, A. Bozdoğan, S. Okkan. Vitamin D deficiency in our breast cancer patients under treatment. 20th National Cancer Congress, Abstract Proceedings Book, Antalya, April 2013.

6.54. Z. Erdoğan, D. Selamoğlu, G. Alço, K.N. Pilancı, G. Demir, S. Tuzlalı, İ.D. Özaçmak, F. Uysal, V. Özmen. Bioelectrical impedance measurement in the diagnosis of lymphedema in breast cancer patients: First results of the Florence Nightingale Breast Study Group. 20th National Cancer Congress, Abstract Proceedings Book, Antalya, April 2013.

6.55. Ş. İğdem, G. Alço, T. Ercan, M. Dinçer, S. Sağlam, G. Demir, C. Tecimer, S. Okkan. Neoadjuvant volumetric modulated arc therapy with simultaneous integrated boost technique in locally advanced rectal cancer: Acute side effects. 20th National Cancer Congress, Abstract Proceedings Book, Antalya, April 2013.

6.56. G. Alço, A. Bozdoğan, D. Selamoğlu, K.N. Pilancı, S. Tuzlalı, Ç. Ordu, G. Demir, V. Özmen. Ki67 cutoff value in our breast cancer patients in Turkey: Relationship with clinical and histopathological factors. 12th National Breast Diseases Congress, Abstract Proceedings Book, Antalya, October 2013. (ORAL PRESENTATION)

6.57. Ş. İğdem, M. Barlan, T. Ercan, G. Alço, S. Okkan. SpaceOAR™ gel injection between the anterior rectal wall and prostate in prostate radiotherapy. 11th Urooncology Congress, Abstract Proceedings Book, Antalya, November 2013.

6.58. Ç. Ordu, A. Bozdoğan, G. Alço, KN Pilancı, Z. Erdoğan, F. Ağaçayak, S. İlgün, A. Öztürk, V. Özmen. Does young age (≤40 years) and molecular subtype affect the choice of surgical treatment in early stage breast cancer patients? 5th Turkish Medical Oncology Congress, Congress Book, Antalya, March 2014.

6.59. K. Pilancı, G. Alço, Ç. Ordu, A. Bozdoğan, Z. Erdoğan, F. Ağaçayak, Ş. İğdem, S. Okkan, C. Tecimer, V. Özmen. Two important side effects of zoledronic acid in women with bone metastatic breast cancer: Renal failure and jaw osteonecrosis. 5th Turkish Medical Oncology Congress, Congress Book, Antalya, March 2014.

6.60. G. Alço, Ş. İğdem, S. Okkan, M. Dinçer, D. Selamoğlu, F. Ağaçayak, S. İlgün, V. Özmen. Changes in tumor bed coordinates in breast cancer patients who underwent breast conserving surgery with latissimus dorsi mini-flap reconstruction. 11th National Radiation Oncology Congress, Turkish Journal of Oncology, Vol 29, (Suppl) 1, p 111, Antalya, April 2014. (ORAL PRESENTATION)

6.61. Ş. İğdem, G. Alço, T. Ercan, M. Dinçer, S. Okkan. Hypofractionated Intensity Modulated Radiotherapy in Localized Prostate Cancer: Early Term Quality of Life Evaluation. 11th National Radiation Oncology Congress, Turkish Journal of Oncology, Vol 29, (Suppl) 1, p 149, Antalya, April 2014.

6.62. Ş. İğdem, T. Ercan, G. Alço, M. Dinçer, S. Okkan. Hydrogel Injection and Hypofractionated Intensity Modulated Radiotherapy in Prostate Cancer Treatment: Dosimetric Comparison. 11th National Radiation Oncology Congress, Turkish Journal of Oncology, Vol 29, (Suppl) 1, p 149, Antalya, April 2014.

6.63. Ş. İğdem, M. Barlan, G. Alço, S. Özgen, B.M. Atasoy, R. Ergelen, A. İribaş, F. Ağaoğlu, N. Tenekeci. Transperineal Hydrogel Application in Prostate Cancer Radiotherapy, Technique and Tolerability: Multicenter Study Results. 11th National Radiation Oncology Congress, Turkish Journal of Oncology, Vol 29, (Suppl) 1, p 150, Antalya, April 2014.

6.64. F. Çelebi, KN. Pilanci, Ç. Ordu, G. Alço, D. Sarsenov, S. Ilgün, V. Özmen. The Role of Ultrasonographic Features in Predicting Molecular Subtype, Histologic Grade and Hormone Receptor Status in Breast Cancer. SS-122 2014turkrad/CONTENT/SS-122. (ORAL PRESENTATION)

6.65. D Sarsenov, AS T.Ercan, Ş.İğdem, G. Alço, M. Barlan, D. Çelik, S. Okkan. Dosimetric effect of rectal spacer in localized prostate cancer patients treated with hypofractionated radiotherapy. S Ilgün, ,Ç Ordu, G Alço, F Çelebi, KN Pilancı, F Ağaçayak, ZE Erdoğan, Y Eralp, M Dinçer, V Özmen. Effect of local recurrence after breast conserving surgery on survival. 13th National Breast Diseases Congress, Antalya 2015 (ORAL PRESENTATION) (First Prize Oral Presentation Award)

6.66. AS İlgün, D Sarsenov, D Selamoğlu, G Alço, KN Pilancı, Ç Ordu, F Çelebi, F Aktepe, Y Eralp, HS Tuzlalı, V Ozmen 2015, Receptor change in patients who developed recurrence after breast cancer treatment and its effect on prognosis, P204, 13th National Breast Diseases Congress, Antalya 2015

6.67. Ç Ordu, G Alço, KN Pilancı, F Çelebi, S İlgün, D Sarsenov, ZE İyigun, F Agacayak, F Çabuk, Y Eralp, F Aktepe, V Özmen. Effect of amenorrhea on survival in premenopausal women treated for early stage breast cancer, S34 (ORAL PRESENTATION), 13th National Breast Diseases Congress, Antalya 2015

6.68. ZE Erdoğan, KN Pilancı, S İlgün, Ç Ordu, G Alço, F Çelebi, D Sarsenov, Y Eralp, V Özmen. Relationship between estrogen receptor positivity and bone density in patients diagnosed with breast cancer, P49, 13th National Breast Diseases Congress, Antalya 2015

6.69. G. Alço, Ş İğdem, T. Ercan, D Çelik, S. Okkan. Preoperative accelerated simultaneous integrated boost intensity modulated radiotherapy in rectal cancer. PS-0220, XII. National Radiation Oncology Congress, 20-24 April 2016, Antalya

6.70. G. Alço, Ş İğdem, T. Ercan, S. Okkan. Linac-based ultrahypofractionated prostate radiotherapy: Initial experience. PS-0260, XII. National Radiation Oncology Congress, 20-24 April 2016, Antalya

6.71. G. Alço, Ş İğdem, D Çelik, T. Ercan, S. Okkan. Hippocampus-sparing whole brain intensity modulated radiotherapy (IMRT): Dosimetric Analysis. PS-0376, XII. National Radiation Oncology Congress, 20-24 April 2016, Antalya

6.72. FO Zengin, S Atilla, T Ercan, G Alço, Ş. İğdem, S. Okkan. Rotation, tilt and rolling movements on the 6D robotic couch in patients treated with Stereotactic Body Radiotherapy. PS-0361, XII. National Radiation Oncology Congress, 20-24 April 2016, Antalya

6.73. Ş İğdem, G. Alço, T Ercan, D Çelik, S Okkan. Hypofractionated Intensity Modulated Radiotherapy in Localized Prostate Cancer: Acute Period Side Effects. S-041 (ORAL PRESENTATION), XII. National Radiation Oncology Congress, 20-24 April 2016, Antalya.

6.74. V Ozmen, T Ozmen, MZ Ucuncu, MA Öztürk, D Sarsenov, AS İlgün, G Alço, Ç Ordu, ZE İyigün, F Çelebi, F Ağaçayak, F Aktepe. Our experience with partial latissimus dorsi muscle flap. 14th National Breast Diseases Congress, Antalya 2017 (ORAL PRESENTATION)

6.75. T Duymaz, Z Iyıgun, AS Ilgun, Ç Ordu, M Ucuncu, G Alço, A Ozturk, F Elbuken, F Izcı, F Aktepe,. Effects of partial latissimus dorsi flap on shoulder function in breast reconstruction. PP03 14th National Breast Diseases Congress, Antalya 2017

6.76. AS Ilgun, D Sarsenov, A Ozturk, F Agacayak, F Elbuken, G Alco, Z Erdogan, C Ordu, KN Pilancı, F Aktepe, V Ozmen. Preoperative breast MRI and survival in breast cancer patients. PP010 14th National Breast Diseases Congress, Antalya 2017

6.77. V. Ozmen, T Ozmen, MZ Üçüncü, A Öztürk, D sarsenov, S ilgün, G Alço, Ç. Ordu, Z Erdoğan, F. Elbüken, F ağaçayak, F Aktepe. Comparison of patients with multifocal-multicentric breast cancer and unifocal breast cancer. SS-021, 14th National Breast Diseases Congress, Antalya 2017

6.78. T. Ercan, Ş. İğdem, G. Alço, M. Barlan, D. Çelik, S. Okkan. Dosimetric effect of rectal spacer in localized prostate cancer patients treated with hypofractionated radiotherapy, SS-23 13th National Radiation Oncology Congress, 2018 (ORAL PRESENTATION) TROD Seyfettin Kuter Medical Physics Best Oral Presentation Award,

6.79. N. Kaydıhan, G. Alço, MŞ. Şenocak, N. Beşe. Approach of radiation oncologists to early implant irradiation TROD Breast Cancer Study Group SS-44 13th National Radiation Oncology Congress, 2018 (ORAL PRESENTATION)

6.80. Ş İğdem, G. Alço, T Ercan, M Barlan, S Okkan. IGRT in Localized Prostate Cancer: Long-Term Results. 13th National Radiation Oncology Congress, 2018

6.81. Ş. İğdem,T. Ercan, G. Alço, D. Çelik,F. Zengin, S. Atilla, M. Barlan, S. Okkan. Gold Marker-Guided SBRT in Prostate Cancer. 13th National Radiation Oncology Congress, 2018

6.82. D. Çelik, Ş.İğdem, G. Alço, S. Okkan. Effect of weight loss on target volumes and organs at risk in head and neck radiotherapy. 13th National Radiation Oncology Congress, 2018

6.83. Ş. İğdem, M. Barlan, T. Ercan, G. Alço, D. Çelik, S. Yıldırım, S. Okkan. Use of electromagnetic transmitter to monitor intrafraction motion in prostate cancer radiotherapy: application, stability, treatment duration. EP-092, 23rd National Cancer Congress, 2019.

6.84. G. Alço, A. Altınok, Ş.İğdem, Z. Özsaran, AA Eren, Y Güney, İ Çetin, Z. Özgen, DÇ Öksüz, B Gürsel, Ö Altmışdörtoğlu, Y Bölükbaşı, P. Altinok, V. Demircan, R. Habiboğlu, OC Güler, E. Erciş, N Beşe. Does radiotherapy field selection affect regional control in cases with isolated tumor cells and micrometastatic disease in the sentinel lymph node? (ORAL PRESENTATION), 15th National Breast Diseases Congress, Antalya 2019

6.85. AS İlgun, G. Alço, MA Ozturk, F Agacayak, F Çelebi, ZE Erdoğan, KN Pilancı, Ç Ordu, F Aktepe, G Soybir, V Özmen. Factors affecting local recurrence in patients treated for DCIS. 15th National Breast Diseases Congress, Antalya 2019 (ORAL PRESENTATION)

6.86. TK Tapan, ZE İyigün, KN Pilancı, S. İlgün, G. Soybir, G. Alço, F. Aktepe, Ç.Ordu, F. Ağaçayak, F. Elbüken, T.Duymaz, V. Özmen. The Effect of Breast Cancer Diagnosis on Dietary Habits: A Controlled Study. 15th National Breast Diseases Congress, Antalya 2019 (ORAL PRESENTATION)

6.87. F. Çelebi, F. Ağaçayak, A. Öztürk, S. İlgün, Ç.Ordu, KN Pilancı, G. Alço, G. Soybir, F. Aktepe, V. Özmen. Effectiveness of imaging findings in predicting tumor infiltrating lymphocyte levels in breast cancer patients. 15th National Breast Diseases Congress, Antalya 2019 (ORAL PRESENTATION)

6.88. N. Kaydıhan, G. Alço, MŞ Şenocak, N Beşe. SS-25 (ORAL PRESENTATION) Published TROD Studies, TROD Virtual Congress, November 2020.

6.89. T. Ercan, G. Alço, S.Yıldırım, ŞM İğdem. Examination of v105% before and after merging in hypofractionated FinF breast radiotherapy using AAA and Accuros XB algorithms. PS 102, TROD Virtual Congress, November 2020

7. Other publications

7.1. M.S. Moran. Literature alert: Coverage of axillary lymph nodes with high tangential fields in breast radiotherapy: Alco G, Igdem S, Ercan T, et al (Florence Nightingale Gayrettepe Hosp, Istanbul, Turkey) Br J Radiol 83: 1072-1076, 2010. Breast Diseases: A Year Book Quarterly 2011; 23(3): 307-308.