Prof. Dr.
Ömer Bender

Prof. Dr. Ömer Bender
General SurgerySpecialist

He was born in Trabzon in 1959. He graduated from Istanbul University Cerrahpaşa Faculty of Medicine with honors in 1982. In 1988, he was appointed as the Chief Assistant of Haseki Hospital 1st Surgery Clinic as a General Surgery Specialist. He completed his military service as a General Surgery Specialist at Ankara Etimesgut 600-Bed Air Hospital between 1988 and 1990.

In 1991, he was appointed as the Chief Assistant of the General Surgery Clinic of Okmeydanı Training and Research Hospital. In 1999, he passed the Clinical Chief and Deputy Chief examination organized by the Ministry of Health with the first place. In 2003, he concentrated his studies in the field of Breast and Endocrine Surgery. In 2005, Ductoscopy (milk duct endoscopy) began to be performed for nipple discharge for the first time in Turkey. He has performed over 1500 ductoscopy procedures to date. It is currently the only clinical practitioner of this method in our country.

In 2008, he developed the Endoscopic Papillomectomy method, which provides the non-surgical treatment of "Intraductal Papillomas" that cause nipple discharge, for the first time in the world. To promote the method, Dr. Susan Love was invited to the USA by the Research Foundation as a speaker at the 2009 Intraductal Symposium. She is invited as a speaker to all symposiums after this date.

In 2009, he applied for the YÖK Associate Professorship exam and received the title of Associate Professor of General Surgery in his first year.

In 2011, she was chosen first in the scientific research competition on Breast Cancer held in Los Angeles, USA, and received a 20,000 USD award from the Dr. Susan Love Research Foundation.

He left public service in 2012 and was appointed as a faculty member at Istanbul Yeni Yüzyıl University.

He earned the title of Professor of General Surgery in 2015

He has over 130 scientific research articles published in national and international scientific journals and presented at congresses.

Awards Won

• Best Video Oral Presentation Award for the study titled "Microendoscopy of Breast Milk Ducts" at the "8th National Endoscopic Laparoscopic Surgery Congress". 1-4 July 2007 /Antalya
• Second Prize for Best Poster at the "12th National Colon Rectum Surgery Congress" with the work titled "Factors Affecting Recurrence in Stapler Hemorrhoidopexy". 19-24 May 2009 / Antalya
• "7th. International Symposium on the Intraductal Approach to Breast Cancer" Dr. Best Scientific Research Project 1st Prize (20,000 USD prize) given by Susan Love Research Foundation February 23-26, 2011 Santa Monica California/USA
• "34th Annual San Antonio Breast Cancer Symposium" Best Paper (2,000 USD award) San Antonio, Texas, USA 6-10 December 2011

Articles Published in International Refereed Journals

1. Nüvit Duraker, Ömer Bender, Kemal Memişoğlu, A. Yalçıner, "Intraoperative bowel irrigation improves anastomotic collagen metabolism in the left-sided colonic obstuction but not covering colostomy" İnt. J. Colorect. External. 1998; 13: 232-234.
2.  Enis Yüney, Anıl Höbek, Murat Keskin, Orhan Yılmaz, Sedat Kamalı, Cenan Oktay, Ömer Bender, "Laparoscopic Splenectomy and LigaSure" Surg Laparosc Endosc Percutan Tech 2005; 15(4): 212-215
3.  Yavuz Selim Sarı, Didem Can, Vahit Tunalı, Orhan Şahin, Oğuz Koç, Ömer Bender, "H. Pylory: Treatment for the patient only or the whole family?" World J Gastroenterol 2008 February 28; 14(8) 1244-1247
4.  Ömer Bender, Savaş Karyağar, Fatih Levent Balcı, Enis Yüney, Sedat Kamalı, Tevfik Özpaçacı, Mehmet Mülazımoğlu, Ercan Uyanık, Sevda S. Karyağar, Yavuz Selim Sarı. "Gamma Probe 99mTc-Pertechnetate Assisted Completion Thyroidectomy vs Conventional Thyroidectomy in Differentiated Thyroid Carcinoma" Hellenic Journal of Nuclear Medicine Volume 12, Number 2, May-August 2009.
5.  Gökhan Adaş, Oğuzhan Karatepe, Merih Altıok, Muharrem Battal, Ömer Bender, Deniz Özcan, Servet Karahan. "Diagnostic Problems with Parasitic and Nonparasitic Splenic Cysts" BMC Surgery 2009, 9:9 DOI:10.1186/1471-2482-9-9
6.  Ömer Bender, Fatih Levent Balcı, Enis Yüney, Fazıl Sağlam, Yaşar Özdenkaya, Yavuz Selim Sarı, "Systemic inflammatory response after Kugel versus laparoscopic groin hernia repair: a prospective randomized trial" Surg. Endosc. 2009; 23:2657-2661 PMID: 19440788 DOI 10.1007/s00464-009-0495-2
7.  Ömer Bender, Fatih Levent Balcı, Enis Yüney, Hasan Akbulut, "Scarless Endoscopic Papillomectomy of the Breast" Onkologie 2009;32:94-9
8. 8- Savaş Karyağar, Oğuzhan Karatepe, ÖmerBender, Mehmet Mulazımoğlu, Tevfik Ozpaçaci, Ercan Uyanık, Sevda Karyağar, Orhan Yalçın, Yaşar Ozdenkaya. Tc99m radio-guided completion thyroidectomy for differentiated thyroid carcinoma. Indian J Nucl Med. 2010 Jan;25(1):12-5. PMID: 20844663
9.  Sedat Kamalı, Ömer Bender, Mehmet Timuçin Aydın, Enis Yüney, Gülçin Kamalı "Ductoscopy in the Evaluation and Management of Nipple Discharge " Annals of Surgical Oncology Ann Surg Oncol. 2010 Mar;17(3):778-83. PMID: 20012502
10.  Tamer Ozülker, Ozülker F, Tevfik Ozpaçaci, Ömer Bender, Değirmenci H. The efficacy of (99m)Tc-MIBI scintimammography in the evaluation of breast lesions and axillary involvement a comparison with X-ray mammography, ultrasonography and magnetic resonance imaging. Hell J Nucl Med. 2010 May-Aug;13(2):144-9.PMID: 20808988
11.  Kamali S, Bender O, Kamali GH, Aydin MT, Karatepe O, Yuney E. Diagnostic and therapeutic value of ductoscopy in nipple discharge and intraductal proliferations compared with standard methods. Breast Cancer. 2012 Jun 6. PMID: 22669683
12. S.Kamalı, G. Harman Kamalı, A. Akan, Ş. Simsek, O. Bender. Use of ductoscopy as an additional diagnostic method and its applications in nipple discharge. Minerva Chirurgica 2014 Vol.69-No.2, 65-73
13.  Ömer Bender, Süleyman Bozkurt, Nur Büyükpınarbaşılı, Fatma Ümit Marya, Muharrem Battal, Oğuzhan Karatepe. Clinical significance of intraoperative frozen section analysis of pancreatic cancer surgical margin at the time of pancreatic duodenectomy. Chirurgia (2015) 110: 446-450 No. 5, September-October
14.  Ravza Yılmaz, Ömer Bender, Fatma Çelik Yabul, Menduh Dursun, Mehtap Tunacı, Gülden Acunas. Diagnosis of Nipple Discharge: Value of Magnetic Resonance Imaging and Ultrasonography in Comparison with Ductoscopy. Balkan Med J 2017; 34:119-26

Papers Presented at International Scientific Meetings

1.  D.Özturan, E.Yüney, K.Kef, G.Yıldırım, M.Şahin, Ö.Bender, C.Özkan, "Free Flap Application in Head and Neck Reconstruction" 15th World Congress of Otorhinolaryngology Head and Neck Surgery 20- 25 June 1993 Turkey
2. H.Evruke, F.Hızlı, B.Ağca, O.Kaya, Ö.Bender, M.Yalaza, D.Can, K.Sarı,"Laparoscopic Cholecystostomy in Acute Cholecystitis in Elderly Patients" 3rd Mediterranean Middle Eastern Endoscopic Surgery Congress . 22-25 October 2003. Istanbul
3. Ömer Bender, Birol Ağca, Didem Can, Akif Feyizoğlu, Hakan Evruke, Yücel Polat, Kazım Sarı, "Biloma After Laparoscopic Cholecystectomy" 3rd Mediterranean Middle Eastern Endoscopic Surgery Congress. 22-25 October 2003. Istanbul
4. Tevfik Özpaçacı, Mehmet Mülazımoğlu, Savaş Karyağar, Anıl Höbek, Ömer Bender, Sadık Ergür, Ercan Uyanık, "Tc-99m Labeled heat damaged red blood cell radioguided surgery for accessory splenic tissue" 7th International Congressof Nuclear Oncology & 18th National Congress of the Turkish Society of NuclearMedicine May 13-17, 2006, Antalya
5.  S. Karyagar, H. Ünal, M. Mülazımoglu, E. Yüney, O. Yalçın, Ö. Bender, E. Uyanık, A.Höbek, S. Sağlampınar, S. Ergür, Y.Özdenkaya, T.Özpacacı, S. Erol "Radio-guided completion thyroidectomy for differentiated thyroid carcinoma using I-131". European Association of Nuclear Medicine (EANM)Annual Congress October 13-17, 2007 Copenhagen/Denmark
6. S.Karyagar, M.Mülazımoğlu, E.Uyanık, Ö.Bender, O.Yalcın, E.Yüney, S.Sağlampınar, R.Uslu, A.Yıldız, A.Höbek, S.Hacımahmutoğlu, Y.Özdenkaya, S. Ergür, T. Özpacacı, "Tc-99m radio-guided completion thyroidectomy in patients with differentiated thyroid carcinoma" 7th International Congressof Nuclear Oncology & 18th National Congress of the Turkish Society of NuclearMedicine May 13-17, 2006, Antalya
7. Fatih Levent Balcı, Ömer Bender, Enis Yüney, Sedat Kamalı, Gönül Aykuter, Hakan Çapar, Ayhan Sarı, Süleyman Köktaş, "MRI Failed, Ductoscopy-Assisted Ductal Lavage Detected a DCIS: A Case Report." NESA Days September 1-3,2007 Istanbul / Turkey
8.  Ömer Bender, Enis Yüney, Fatih Levent Balcı, Sedat Kamalı, Gönül Aykuter, Hakan Çapar, Ayhan Sarı, Süleyman Köktaş, "Ductoscopic Visions and Excision of Intraductal Papillomas in Patients with Nipple Discharge" NESA Days September 1-3,2007 İstanbul /Turkey
9. Yavuz Selim Sarı, Didem Can, Vahit Tunalı, Orhan Şahin, Oğuz Koç, Ömer Bender, "H pylory: Treatment for the patient only or the whole family?" Ehrlich ll-2 nd. World Conference on Magic Bullets. Celebrating the 100th. Anniversary of the Nobel Prize Award to Paul Ehrlich. October 3-5, 2008 Nuremberg, Germany
10. Ömer Bender, Sedat Kamalı, Fatih Levent Balcı, Enis Yüney, Neslihan Cabioğlu, "Ductoscopy in the Therapeutic Management of Patients With Pathologic Nipple Discharge" The American Society of Breast Surgeons 9th. Annual Meeting, April 30- May 4, 2008 New York City/USA
11. Semih Hot, Ömer Bender, Kenan Çetin, Erol Deniz, Yusuf Kılıç, Ayhan Sarı, Süleyman Kökdaş, Enis Yüney "The effect of transfer of Social Insurance Foundation (SSK) to the Ministry of Health and working capital additional payment to the medical doctors on emergency operations and patient profile" 10 th. European Congress of Trauma and Emergency Surgery.13-17May 2009, Antalya/Turkey
12. Semih Hot, Ömer Bender, Yusuf Kılıç, Erol Deniz, Kenan Çetin, Ayhan Sarı, Enis Yüney, "Frequency of Colorectal Cancer Cases that were Diagnosed for the First Time in Emergency Operations Caused by Ileus "10 th. European Congress of Trauma and Emergency Surgery.13-17May 2009, Antalya/Turkey
13.  Ömer Bender, Fatih Levent Balcı, Enis Yüney, Hasan Akbulut, "Therapeutic Value of a New Scarless Intervention, Ductoscopic Papillomectomy, in Patients With Pathologic Nipple Discharge" Dr.Susan Love Research Foundation 6 th. International Symposium on the Intraductal Approach to Breast Cancer.February 19-21, 2009 Santa Monica California/USA
14. Fatih Levent Balcı, Ömer Bender, Arife Polat Düzgün, Saliha Seyyal Rota, Barış Saylam, Mehmet Vasfi Özer, Faruk Coşkun, Deniz Özcan, Işıl Fidan, Semih Hot, Enis Yüney, "HPV Types/Subtypes in Papilloma And Breast Cancer" 7 th. . International Symposium on the Intraductal Approach to Breast Cancer. February 23-26, 2011 Santa Monica California/USA
15.  Balcı FL, Bender Ö, CoşkunF, Düzgün AP, Saylam B, Yüney E, Rota S, Fidan I, Feldman S, Soran A. "Human Papilloma Virus Identification in Intraductal Papilloma and Breast Cancer using broad-spectrum primers; preliminary data " 34 .Annual San Antonio Breast Cancer Symposium. San Antonio, Texas, USA 6-10 December 2011
16.  Cabioğlu N, Bender Ö, Ergozen F, Ozkurt E, Tukenmez M, Yılmaz R, Onder S, Balci FL, Muslimoglu M, Ozmen V, Dinccag A, Igci A. "Clinicopathological Charesteristics of Nipple Discharge Associated Breast Cancer" The American Society of Breast Surgeons 17th Annual Meeting Poster Gallery, April 13-16, 2016 Dallas TX
17.  Fatih Levent Balcı, Ömer Bender, Neslihan Cabioğlu, Mahmut Muslimoğlu, Abdullah İğci, Vahit Özmen. "Could ductoscopy be used to identify breast cancer in patients with pathologic nipple discharge?" The American Society of Breast Surgeons 17th Annual Meeting Poster Gallery, April 13-16, 2016 Dallas TX

Articles Published in National Refereed Journals

1.  M.E. İrfanoğlu, N.Duraker, S.Çelebioğlu, Ö.Bender, T.Özgönül, T.Özpaçacı, A.Özveren, "Evaluation of Solitary Nonfunctional Thyroid Nodules with Needle Aspiration Biopsy" Endocrinology Yearbook 1985-1986
2.  M.E.İrfanoğlu, A.Kaygusuz, S.Taşkıran, S.Çelebioğlu, N.Duraker, Ö.Bender, "Primary Retroperitoneal Tumors" Okmeydanı Hospital Medical Bulletin 1986 3:29-30
3.  M.E.İrfanoğlu, A.Kaygusuz, S.Taşkıran, H.Ziyadanoğlu, N.Duraker, Ö.Bender, M.Emirleroğlu, "A Rare Case of Hydatid Cyst" Okmeydanı Hospital Medical Bulletin 1987 4:1-6
4.  M.E.İrfanoğlu, N.Duraker, A.Kaygusuz, Ö.Bender, T.Özgönül, T.Özpaçacı, "Evaluation of Solitary Nonfunctional Thyroid Nodules with Needle Aspiration Biopsy" Okmeydanı Hospital Medical Bulletin 1987, 4;4: 267-273
5.  A.Kaygusuz, M.E.İrfanoğlu, A.Perek, Ö.Bender, "Gallbladder Fistulas" Okmeydanı Hospital Medical Bulletin 1988 5; 1:52-57
6.  Kemal Akay, Ömer Bender, Canan Gürsel, Üzeyir Tuncer, "Surgical Approach in Colon Injuries" Colon Rectum Hast.Derg.1992,2:134-136
7.  Ömer Bender, Y.Kemal Akay, Ender Alptosun, Servet Karahan, "Obturator Hernia" Haseki Medical Bulletin 1992 4: 403-405
8.  Nüvit Duraker, Şefika Aksoy, Ömer Bender, Filiz Kırık, "BhCG, CEA, CA 549 in Breast Cancer" Journal of Clinical and Experimental Surgery 1993;1: 198-200
9.  Ömer Bender, Y.Kemal Akay, Servet Karahan, Ender Alptosun, "Limberg Flap in the Treatment of Pilonidal Sinus (Prospective Study)" Surgical Medicine Bulletin 1993 1: 17-20
10.  D.Özturan, E.Yüney, K.Kef, G.Yıldırım, M.Şahin, C.Özkan, Ö.Bender, "Application of Jejunal Flap in Cervical Esophageal Tumors" Turkish Otolaryngology Archive 1993 2: 100-106
11.  D.Özturan, E.Yüney, K.Kef, G.Yıldırım, M.Şahin, Ö.Bender, C.Özkan, "Free Flap Application in Intraoral Cancers" ENT Journal of Ear Nose and Throat Specialization 1993 6:2-6
12. D.Özturan, Ö.Bender, E.Üçler, "Free Jejunum Transfer in Bilateral Maxillectomy Reconstruction" ENT Ear Nose and Throat Specialization Journal 1993 6:10-13
13.  Çiğdem Papilla, Vedat Durgun, Ömer Bender, Metin Kapan, Aslı Şad, "The Contribution of Addition of Hormonotherapy to Systemic Chemotherapy in the Patient Group with Stomach and Colorectal Tumors on Survival" Okmeydanı Medical Journal 1994, 12: 26-28
14.  Nüvit Duraker, Elif Peştereli, Sinan Çavuşoğlu, Ömer Bender, Nezih Hekim, Şefika Aksoy, "The Relationship of Flow Cytometric DNA Content and S-Phase Fraction with Clinical and Histopathological Parameters in Breast Cancer" Klin Deney Cerrah Derg. 1994; 2:181-185
15.  Ömer Bender, Bayram Kaya, "Primary Omentum Torsion" Okmeydanı Hospital Bulletin 1995,13:2-3
16.  Nüvit Duraker, Elif Peştereli, Sinan Çavuşoğlu, Ömer Bender, Deniz Özcan, Özden Öz Calay, "Prognostic Value of Flood Cytometric Aneuploidy and High Synthesis Phase Fraction in Primary Breast Cancer" National Journal of Surgery, Vol.11, Issue 6: 394-401
17.  Nüvit Duraker, Ömer Bender, Şefika Aksoy, Gülçin Kamalı, Mehmet Karadon, "Is Thin Catheter Aspiration Cytology of the Peritoneum Useful in the Diagnosis of Acute Appendicitis?" Journal of Contemporary Surgery 1997, 11: 95-97
18.  Nüvit Duraker, Ömer Bender, Giray Yavuz, Kemal Memişoğlu, Altan Yalçıner, Özden Öz Calay, "The Effect of Intraoperative Bowel Washing with Different Solutions on Anastomotic Healing in Acute Left Colon Obstruction" National Journal of Surgery 1998, 14; 1:17-21
19.  Ömer Bender, Birol Ağca, Ali Durmuş, Hakan Evruke, Akif Feyizoğlu, Didem Can, Kazım Sarı "Circular Stapler Anoplasty Method in the Treatment of Hemorrhoids and Rectal Mucosal Prolapse (Clinical Prospective Study) Journal of Contemporary Surgery 17(3): 156-160, 2003.
20.  Ömer Bender, Birol Ağca, Fuat Güçlü, Didem Can, Bayram Kaya, Akif Feyizoğlu, Hakan Evruke, Yücel Polat, Kazım Sarı, "Bilioma After Laparoscopic Cholecystectomy" End.Lap. and Minimally Invasive Surgery 2003, 10;4: 168-171
21.  Ömer Bender, Birol Ağca, Fuat Güçlü, Mr.ram Kaya, Akif Feyizoğlu, Didem Can, Hakan Çapar, M.Güray Duman, Kazım Sarı, "Posterior Wall Mesh Knitting Method in Inguinal Hernia Repair" Okmeydanı Medical Journal 2004. 21; 1:38-40
22.  Ömer Bender, Enis Yüney, Hakan Çapar, Anıl Höbek, Birol Ağca, Okan Akat, Bayram Bağlar, F.Levent Balcı, Gönül Aykuter, Yılmaz Helvacıoğlu, "Our Experiences with Total Thyroidectomy" Dialogue in Endocrinology 2004;1: 15-18
23.  Mehmet Mülazımoğlu, Savaş Karyağar, Şerafettin Hacımahmutoğlu, Orhan Yalçın, Nalan Ulufi, Ömer Bender, Yaşar Özdenkaya, Sevda Sağlampınar "3-Year Experience Results in Sentinel Lymph Node Dissection in Breast Cancer Patients with Lymphoscintigraphy and Gamma Probe" Okmeydanı Training and Research Hospital Medical Journal, 2006 , 23; 2:10-14.
24.  Mehmet Mülazımoğlu, Savaş Karyağar, Şerafettin Hacımahmutoğlu, Hakan Ünal, Sadık Ergür, Enis Yüney, Orhan Yalçın, Nalan Ulufi, Ömer Bender, Yaşar Özdenkaya, "Gamma Probe Device: Clinical Use in Collaboration with Nuclear Medicine and Surgery" Okmeydanı Training and Research Hospital Medicine Journal 2006, 23; 2:21-28.
25.  Ömer Bender, Fatih Levent Balcı, Sedat Kamalı, Gönül Aykuter, Ayhan Sarı, Erol Deniz, Hasan Akbulut, Enis Yüney, "Ductoscopy in Pathological Nipple Discharge" Breast Health Journal. 2008 Volume:4 Issue:2 92-98
26.  Ömer Bender, Enis Yüney, E.Zeynep Kırkalı Albayrak, Hülya Önay, Fatih LeventBalcı, Sedat Kamalı, Hasan Akbulut, Kenan Çetin, "Diagnosis and Treatment Potential of Ductoscopy" Journal of Breast Diseases 2009
27.  Ömer Bender, Enis Yüney, Savaş Karyağar, Sedat Kamalı, Semih Hot, Levent Balcı, Hasan Akbulut, Kenan Çetin, Tevfik Özpaçacı, "Gamma Probe Assisted Complementary Thyroidectomies" Journal of Dialogue in Endocrinology 2009, issue 2
28.  Ömer Bender, Yusuf Kılıç, Semih Hot, Aslı Ertürk, "The effectiveness of elastography in the differential diagnosis of benign - malignant thyroid nodules and its comparison with fine needle aspiration biopsy" Journal of Dialogue in Endocrinology 2012, 9(3): 103-107
29.  Ömer Bender, Yusuf Kılıç, Semih Hot, Aslı Ertürk, Zafer Ünsal Coşkun, Arzu Akan, "Diagnostic Accuracy and Reliability of Ultrasonelastography in the Evaluation of Thyroid Nodules" Okmeydanı Medical Journal 2012; volume:28 issue:3, 151-156.
30. Ayhan Sarı, Semih Hot, Ömer Bender, Aslı Ertürk, Enis Yüney, Semra Günay, Ali Alemdar "Total Excision with the ROLL Method in Non-palpable Breast Lesions" Breast Health Magazine. 2013 Volume:9 Issue:3 151-155

Papers Presented at National Scientific Meetings

1.  M.E.İrfanoğlu, N.Duraker, S.Çelebioğlu, Ö.Bender, T.Özgönül, T.Özpaçacı, A.Özveren, "Evaluation of Solitary Nonfunctional Thyroid Nodules with Needle Aspiration Biopsy" 13th Endocrinology Congress 25-26 April 1986 Istanbul.
2. A.Aren, F.Hızlı, H.Evrüke, A.Feyizoğlu, S.Günay, Ö.Bender, N.Duraker, K.Sarı, "Prophylactic Use of Antibiotics in Laparoscopic Cholecystectomy" 1st National Endoscopic-Laparoscopic Surgery Congress 10-13 November 1993 Istanbul
3.  Nüvit Duraker, Ömer Bender, Elif Beştereli, Sinan Çavuşoğlu, "Relationship of Flow Cytometric DNA Content and S-Phase Fraction with Clinical and Histopathological Parameters in Breast Cancer" National Surgery Congress 9-13 June 1994 Istanbul
4. Acar Aren, Akif Feyizoğlu, Fuat Güçlü, Hakan Evruke, Semra Günay, Ömer Bender, Kazım Sarı, "Transduodenal Diverticulectomy in Symptomatic Primary Duodenal Diverticules" 15th SSK Medical Congress 18-21 April 1994 Izmir.
5.  Nüvit Duraker, B.Kaya, Ömer Bender, Filiz Kırık, "BhCG, CEA, CA19-9 in Malignant Gastrointestinal System Tumors" 15th SSK Medical Congress 18-21 April 1994 Izmir.
6.  Ömer Bender, Ayşe Tek, Acar Aren, Nüvit Duraker, Fuat Güçlü, Hakan Evruke, Şefika Aksoy, Kazım Sarı, "Posterior Wall Mesh Knitting Method in the Repair of Inguinal Hernias" 15th SSK Medical Congress 18-21 April 1994 Izmir.
7.  H.Evruke, F.Hızlı, A.Aren, K.Sarı, A.Feyizoğlu, Ö.Bender, "Our Laparoscopic Cholecystectomy Experiences in Acute Calculic Cholecystitis Cases. 14-16 September, 1995 Istanbul.
8.  H.Evruke, F.Hızlı, A.Aren, K.Sarı, A.Feyizoğlu, Ö.Bender, "Our Laparoscopic Cholecystectomy Experiences in Acute Calculic Cholecystitis Cases" 1st Trauma and Emergency Surgery Congress, 19-23 September 1995 Istanbul.
9.  Acar Aren, Ömer Bender, Şefika Aksoy, Kemal Memişoğlu, Kazım Sarı, "Abdominoperineal Resection in the Surgical Treatment of Anorectal Malignant Melanoma" National Surgery Congress 15-19 May 1996 Antalya.
10.  A.Aren, C.Türek, D.Özturan, E.Eryaman, B.Kaya, N.Duraker, S.Günay, H.Evruke, Ö.Bender, K.Sarı, "Surgical Treatment in Esophageal Cancer" SSK 50th Anniversary Medical Congress 23-25 October 1996. Istanbul.
11.  Ömer Bender, Birol Ağca, Fuat Güçlü, Didem Can, Akif Feyizoğlu, Kazım Sarı, "Body Mass Index Measurement in Male Breast Cancer" 7th National Breast Diseases Congress, 16-19 October 2003 Kemer/ Antalya
12.  Didem Can, Birol Ağca, Semra Günay, Ömer Bender, Kazım Sarı, "Malignant and Recurrent Phylloid Tumor" 7th National Breast Diseases Congress, 16-19 October 2003 Kemer/Antalya
13.  Birol Ağca, Ömer Bender, Didem Can, Fuat Güçlü, Akif Feyizoğlu, Kazım Sarı, "The Relationship Between Tumor Diameter and Axillary Involvement in Male Breast Cancer" 7. National Breast Diseases Congress, 16-19 October 2003 Kemer / Antalya
14.  Birol Agca,Ömer Bender, Fuat Güçlü, Didem Can, Akif Feyizoğlu, Kazım Sarı, "Male Breast Cancer: Retrospective Analysis of 44 Cases" 7th National Breast Diseases Congress, 16-19 October 2003 Kemer/Antalya
15.  Birol Ağca, Ömer Bender, Fuat Güçlü, Didem Can, Metin Yalaza, Hakan Çapar, Kazım Sarı, "Our Treatment Approach in Chronic Anal Fissure" 10th National Colon and Rectum Surgery Congress, 7-11 September 2003, Kemer / Antalya
16.  Ömer Bender, Birol Ağca, Ali Durmuş, Hakan Evruke, Akif Feyizoğlu, Didem Can, Kazım Sarı, "Circular Stapler Mucosectomy in the Treatment of Hemorrhoids" 10th National Colon and Rectum Surgery Congress, 7-11 September 2003, Kemer / Antalya
17.  Birol Ağca, Ömer Bender, Fuat Güçlü, Akif Feyizoğlu, Ali Durmuş, Hakan Çapar, Kazım Sarı, "Analysis of 142 Cases with Colorectal Cancer" 10th National Colon and Rectum Surgery Congress, 7-11 September 2003, Kemer / Antalya
18.  Ömer Bender, Birol Ağca, Fuat Güçlü, Hakan Evruke, Bayram Kaya, Akif Feyizoğlu, Ali Durmuş, Kazım Sarı, "Do the Age and Gender Characteristics of Colorectal Cancers Change Over the Years?" 10th National Colon and Rectum Surgery Congress, 7-11 September 2003, Kemer / Antalya
19.  Birol Ağca, Ömer Bender, Fuat Güçlü, Didem Can, Bayram Kaya, Akif Feyizoğlu, Kazım Sarı, "Age Distribution in Rectal Cancer Screened in a Large Series (Analysis of 1065 Cases)" 10th National Colon and Rectum Surgery Congress, 7-11 September 2003 , Kemer /Antalya
20.  Birol Ağca, Fuat Güçlü, Ömer Bender, Hakan Evruke, Didem can, Akif Feyizoğlu, Ali Durmuş, Hakan Çapar, Kazım Sarı, "Our Results of Wide-Based Limberg Flap Method in Pilonidal Sinus Treatment" 10th National Colon and Rectum Surgery Congress, 7-11 September 2003, Kemer /Antalya
21.  Metin Yalaza, Birol Ağca, Hakan Evruke, Fuat Güçlü, Ömer Bender, Bayram Kaya, Ali Durmuş, Akif Feyizoğlu, Kazım Sarı, "Doopler Effects of Posterior Wall Repair, Lichtenstein Method and Pro-Loop Repair Methods on Testicular Blood Flow in Inguinal Hernia Repair" Comparison with Ultrasonography (Clinical Prospective Study; Early Results)" National Surgery Congress 26-30 May 2004 Belek/Antalya
22. Ömer Bender, Birol Ağca, Hakan Evruke, Fuat Güçlü, Didem Can, Hakan Çapar, Kazım Sarı, "Factors Affecting Urinary Retention Following Surgeries Using Spinal Anesthesia" National Surgery Congress 26-30 May 2004 Belek/Antalya
23.  Ömer Bender, Birol Ağca, Didem Can, Bayram Kaya, M.Güray Duman, Kazım Sarı, "Net Knitting Technique in Inguinal Hernia Repair" National Surgery Congress 26-30 May 2004 Belek/Antalya
24.  Ömer Bender, F.Levent Balcı, Enis Yüney, Gönül Aykuter, Semra Günay, Ayhan Sarı, Süleyman Kökdaş, "Our Experiences in Imaging Intraductal Lesions of the Breast with a 0.55mm Mini Endoscope" National Surgery Congress 24-28 May 2006 Antalya.
25.  Enis Yüney, Fazıl Sağlam, F.Levent Balcı, Süleyman Köktaş, Ayhan Sarı, Ömer Bender, Sedat Kamalı, "Laparoscopic Splenectomy and Cholecystectomy Applied to Identical Twins with Hereditary Spherocytosis: Two Case Reports" National Surgery Congress 24-28 May 2006 Antalya.
26.  Yaşar Özdenkaya, F.Levent Balcı, Orhan Yalçın, Özgür Yüzer, İdris Kurtuluş, Enis Yüney, Ömer Bender, Yusuf Kılıç, "Three Trocar Laparoscopic Repair of Peptic Ulcus Perforations" 8th National Endoscopic Laparoscopic Surgery Congress, 1-4 July 2007 Antalya.
27.  Ömer Bender, F.Levent Balcı, Sedat Kamalı, Enis Yüney, Ayhan Sarı, Süleyman Köktaş, Hasan Akbulut, Yusuf Kılıç, "Microendoscopy of Breast Milk Ducts" 8th National Endoscopic Laparoscopic Surgery Congress, 1-4 July 2007 Antalya.
28.  F.Levent Balcı, Enis Yüney, Ömer Bender, Orhan Yılmaz, Hakan Çapar, Süleyman Köktaş, Ayhan Sarı, Hasan Akbulut, "Primary Malignant Melanoma of the Gallbladder Diagnosed After Laparoscopic Cholecystectomy" 8. National Endoscopic Laparoscopic Surgery Congress, 1-4 July 2007 Antalya.
29.  Savaş Karyağar, Hakan Ünal, Mehmet Mülazımoğlu, Ercan Uyanık, Orhan Yalçın, Enis Yüney, Yaşar Özdenkaya, Ömer Bender, Sadık Ergür, Sevda Sağlampınar, "Gamma Probe-Guided Complementary Thyroidectomy with I-131 Labeling in Differentiated Thyroid Cancers" 19th National Nuclear Medicine Congress 25-29 April 2007.Adana
30.  Ömer Bender, Enis Yüney, Hakan Çapar, Sedat Kamalı, Ayhan Sarı, Süleyman Köktaş, F.Levent Balcı, Hasan Akbulut, "Our Splenectomy Experiences" 8th National Endoscopic Laparoscopic Surgery Congress, 1-4 July 2007 Antalya.
31.  Ömer Bender, Enis Yüney, F.Levent Balcı, Sedat Kamalı, Gönül Aykuter, Hakan Çapar, Ayhan Sarı, Süleyman Köktaş, Erol Deniz, "Preperitoneal Repair with Kugel Patch in Inguinal Hernias; Our Early Results" 2nd National Hernia Congress 17-20 May 2007 Antalya.
32.  Sedat Kamalı, Ömer Bender, Enis Yüney, Fatih Levent Balcı, Gönül Aykuter, Semra Günay, Ayhan Sarı, Süleyman Köktaş, Erol Deniz, Hasan Akbulut, Yusuf Kılıç, "Our 1-Year Ductoscopy Experiences in Our Clinic. 9th National Breast Diseases Congress 2007.
33. Ömer Bender, Enis Yüney, Sedat Kamalı, Fatih Levent Balcı, Gönül Aykuter, Nalan Ulufi, Hakan Çapar, Ayhan Sarı, Süleyman Köktaş, Erol Deniz, Hasan Akbulut, Yusuf Kılıç, " Ductoscopy Assisted Isolated Duct Excision (Microductectomy)). 9th National Breast Diseases Congress 2007
34.  Ömer Bender, Enis Yüney, Fatih Levent Balcı, Sedat Kamalı, Gönül Aykuter, Nalan Ulufi, Hakan Çapar, Ayhan Sarı, Süleyman Köktaş, Erol Deniz, Hasan Akbulut, Yusuf Kılıç, "A Case of DCIS Diagnosed as a Result of Ductoscopy-Guided Ductal Lavage" 9 National Breast Diseases Congress 2007.
35.  Fatih Levent Balcı, Ömer Bender, Enis Yüney, Sedat Kamalı, Gönül Aykuter, Nalan Ulufi, Hakan Çapar, Ayhan Sarı, Süleyman Köktaş, Erol Deniz, Hasan Akbulut, Yusuf Kılıç, "Microendoscopic Excision of Intraductal Papillomas" 9th National Breast Diseases Congress 2007 .
36.  Ömer Bender, Fatih Levent Balcı, Enis Yüney, Sedat Kamalı, Gönül Aykuter, Semra Günay, Hakan Çapar, Ayhan Sarı, Süleyman Köktaş, Erol Deniz, Hasan Akbulut, Yusuf Kılıç, "Intraductal Polyp in USG, Ductoscopy?; A Case Report " 9th National Breast Diseases Congress 2007.
37.  Ömer Bender, Fatih Levent Balcı, Enis Yüney, Sedat Kamalı, Ayhan Sarı, Süleyman Köktaş, Tevfik Özpaçacı, Savaş Karyağar, "Comparison of Gamma-Probe Guided Complementary Thyroidectomies with the Conventional Technique" 6th Medical Surgical Endocrinology Postgraduate Training Course. 29 November - 2 December 2007 Erzurum.
38.  Sedat Kamalı, Gülçin Harman Kamalı, Ömer Bender, Levent Balcı, Erol Deniz, Enis Yüney, "Are Surgical Complications Increased in Locally Advanced Rectal Cancers with Neoadjuvant Treatment?" 11th National Colon and Rectum Surgery Congress. 26-30 August 2007 Bodrum/Türkiye
39.  Yavuz Selim Sarı, Didem Can, Vahit Tunalı, Orhan Şahin, Oğuz Koç, Ömer Bender, "Helicobacter pylory: Only Treatment of the Patient or Family Treatment?" National Surgery Congress 28-31 May 2008 Antalya.
40.  Birol Ağca, Ömer Bender, Hakan Evruke, Ali Durmuş, Kazım Sarı, Rıdvan Yavuz, M.Güray Duman, "Body Mass Index in Male Breast Cancer" National Surgery Congress 28-31 May 2008 Antalya.
41.  Fatih Levent Balcı, Ömer Bender, Enis Yüney, Hasan Akbulut, "Endoscopic Approach to Pathological Nipple Discharge." National Surgery Congress 28-31 May 2008 Antalya.
42.  Fatih Levent Balcı, Ömer Bender, Enis Yüney, Hasan Akbulut, "Scarless Endoscopic Treatment of Breast Papillomas" National Surgery Congress 28-31 May 2008 Antalya.
43.  Nalan Ulufi, Enis Yüney, Gülçin Kamalı, Sedat Kamalı, Ömer Bender, Orhan Yılmaz, Gönül Aykuter, Hasan Akbulut, Erol Deniz, "Invasive Lobular Cancer Developing on the Base of Fibroadenoma" Istanbul Breast Cancer Conference and National Breast Cancer Consensus Meeting. 21-25 October 2008 Istanbul.
44.  Semih Hot, Ömer Bender, Yusuf Kılıç, Erol Deniz, Ayhan Sarı, Süleyman Kökdaş, Enis Yüney, "Central Lymph Node Dissection in Papillary Thyroid Cancers" Aegean Surgery Congress 23 – 26 April 2009, Çeşme/İzmir.
45.  Ömer Bender, Enis Yüney, Sedat Kamalı, Fatih Levent Balcı, Hasan Akbulut, Semih Hot, Kenan Çetin, Erol Deniz, Yusuf Kılıç, Süleyman Kökdaş, Ayhan Sarı, "Malignant and Premalignant Breast Lesions Diagnosed Through Ductoscopy" 1.Minimal Invasive Surgery Congress, 30 April - 3 May 2009 Kyrenia / TRNC
46. Ömer Bender, Enis Yüney, Fatih Levent Balcı, Sedat Kamalı, Semih Hot, Hasan Akbulut, Kenan Çetin, Gönül Aykuter, Nalan Ulufi, "Endoscopic (Ductoscopic) Treatment of Intraductal Lesions of the Breast" 1st Minimally Invasive Surgery Congress, 30 April - 3 May 2009 Kyrenia /TRNC
47.  S.Karyağar, S.S.Karyağar, T.Özpaçacı, Ö.Bender, M.Mülazımoğlu, E.Uyanık, R.Uslu, E.Yüney, "Excision of Nonpalpable I-131 Negative Cervical Recurrences of Differentiated Thyroid Cancers Using the Roll Technique" 21st National Nuclear Medicine Congress 2-5 May 2009 Antalya.
48.  S.Karyağar, S.S.Karyağar, M.Mülazımoğlu, T.Özpaçacı, E.Uyanık, Ö.Bender, Y.Özdenkaya, E.Yüney "Conventional Complementary Thyroidectomy with Gamma Probe Guided Complementary Thyroidectomy Following Tc-99m Labeling in Differentiated Thyroid Cancer Comparison" 21st National Nuclear Medicine Congress 2-5 May 2009 Antalya.
49.  Semih Hot, Ömer Bender, Volkan Erdoğu, Enis Yüney, Hasan Akbulut, Yusuf Kılıç, Kenan Çetin. "A rare case report; Posterior Mediastinal Goiter" 10th Medical - Surgical Postgraduate Training Course 17-20 November 2011 Belek / Antalya
50.  Semih Hot, Ömer Bender, Enis Yüney, Pınar Özay, Hasan Akbulut, Yusuf Kılıç, Kenan Çetin. "A rare tumor of the breast; SLNB metastatic secretory breast carcinoma" 11th National Breast Diseases Congress 5-9 October 2011 Antalya
51.  Semih Hot, Nalan Ulufi, Bekir Eren, Enis Yüney, Ömer Bender, Hasan Akbulut, Yusuf Kılıç, Kenan Çetin. "A breast cancer case with widespread distant skin metastases" 11th National Breast Diseases Congress 5-9 October 2011 Antalya
52.  Semih Hot, Ömer Bender, Sedat Kamalı, Enis Yüney, Hasan Akbulut, Kenan Çetin. "Ductoscopy in surgery selection in patients with pathological nipple discharge" 11th National Breast Diseases Congress 5-9 October 2011 Antalya
53.  Semih Hot, Ömer Bender, Enis Yüney, Gönül Aykuter, Hasan Akbulut, Yusuf Kılıç, Kenan Çetin. "Breast Recurrent Malignant Phyllodes Tumor Case Report" " 11th National Breast Diseases Congress 5-9 October 2011 Antalya
54.  Semih Hot, Ömer Bender, Enis Yüney, Gönül Aykuter, HaSan Akbulut, Yusuf Kılıç, Kenan Çetin. "Our Accessory Breast Experience and a Polymastia Case" 11th National Breast Diseases Congress 5-9 October 2011 Antalya
55.  Semih Hot, Ömer Bender, Enis Yüney, Hasan Akbulut, Yusuf Kılıç, Kenan Çetin, Gönül Aykuter. "Our First Experiences in the Surgical Treatment of Gynecomastia with Circumareolar Skin Reduction Around the Areola. 11th National Breast Diseases Congress 5-9 October 2011 Antalya
56.  Semih Hot, Ömer Bender, Enis Yüney, Gönül Aykuter, Hasan Akbulut, Yusuf Kılıç, Kenan Çetin. "Our Accessory Breast Experience and a Case of Polymastia" 11th National Breast Diseases Congress 5-9 October 2011 Antalya
57.  Semih Hot, Ömer Bender, Enis Yüney, Hasan Akbulut, Yusuf Kılıç, Kenan Çetin, Gönül Aykuter. "Our First Experiences in the Surgical Treatment of Gynecomastia with Circumareolar Skin Reduction Around the Areola. 11th National Breast Diseases Congress 5-9 October 2011 Antalya.
58.  Ömer Bender, Yaşar Özdenkaya. "Treatment for Hyperthyroidism; Medical, RAI or Surgical?" 3rd Endocrine Surgery Basic Training Workshop 17 November 2011 Antalya
59.  Ömer Bender, "Hypocalcemia After Thyroidectomy" 10th Medical Surgery Postgraduate Training Course 17-20 November 2011 Antalya
60.  Omer Bender. "Marking and Ductal Imaging in Breast Surgery" New Horizons in Surgery congress, Harbiye Military Museum 13-15 March 2015, Istanbul,
61.  Omer Bender. Approach to Nipple Discharge." 3rd Black Sea Breast Congress, 26-28 March 2015 Anemon Hotel Samsun.
62.  Ömer Bender, "A first in our country Ductoscopy (Breast Milk Duct Endoscopy), a first in the world Endoscopic Papillomectomy (Non-Surgical Treatment of Intraductal Papillomas)" Science Days 6 Istanbul Yeni Yüzyıl University 8-9 May 2017
63.  Ömer Bender, Refik Bademci, Hasan Akbulut, Kenan Çetin, Didem Can Trabulus, Ersan Eroğlu. "The Relationship Between Nipple Discharge and Breast Cancer, The Importance of Ductoscopy in Diagnosis. Videotechnical Presentation. 14th National Breast Diseases Congress 19-22 October 2017 Antalya
64.  Refik Bademci, Didem Can Trabulus, Ersan Eroğlu, Kenan Çetin, Hasan Akbulut, Ömer Bender "The Importance of Ductoscopy in Deciding on Surgery in Patients with Pathological Nipple Discharge" 14th National Breast Diseases Congress 19-22 October 2017 Antalya
65.  Ömer Bender, Refik Bademci, Didem Can Trabulus, Ersan Eroğlu, Hasan Akbulut, Kenan Çetin. "Long-Term Results of Patients with Nipple Discharge Who Underwent Ductoscopic Papillomectomy" 14th National Breast Diseases Congress 19-22 October 2017 Antalya
66.  Refik Bademci, Ersan Eroğlu, Didem Can Trabulus, Hasan Akbulut, Kenan Çetin, Ömer Bender. "Comparison of Ductoscopy, Galactography and Other Imaging Modalities in Pathological Nipple Discharge" 14th National Breast Diseases Congress 19-22 October 2017 Antalya
67. Didem Can Trabulus, Canan Kelten Talu, Mehmet Ali Nazlı, Didem Karaçetin, Şefika Aksoy, Ömer Bender, Neslihan Cabioğlu. "Prediction of Non-Sentinel Nodal Status According to Tumor Characteristics in Patients Whose Sentinel Lymph Node Biopsy Was Positive and Had Axillary Lymph Node Dissection Performed" 14th National Breast Diseases Congress 19-22 October 2017 Antalya
68. Didem Can Trabulus, Didem Karaçetin, Mehmet Ali Nazlı, Canan Kelten Talu, Sevgi Yazır Kurt, Şefika Aksoy, Ömer Bender, "Management of Recurrent Phylloid Tumors: Five Case Reports" 14th National Breast Diseases Congress 19-22 October 2017 Antalya

Speaker, Panelist, Session Chairs

1. Uludağ University Current Approaches in General Surgery Meeting Breast Surgery Course 5-8 March 2009 Almira Hotel BURSA "Therapeutic Interventions with Breast Ductoscopy" (With video demonstration) Speaker: Ömer Bender
2. 11th National Breast Diseases Congress 5-9 October 2011 ANTALYA "Nipple Discharges" Speaker: Ömer Bender
3. 11th National Breast Diseases Congress, 5-9 October 2011 ANTALYA "Ductoscopy in Surgery Selection for Nipple Discharge" Speaker: Ömer Bender
4. 10th Medical-Surgical Endocrinology Postgraduate Training Course, 3rd Endocrine Surgery Basic Training Workshop 17-20 November 2011 Antalya "Hyperthyroidism Treatment; Medical, RAI or Surgical" Speaker: Ömer Bender
5. 10th Medical-Surgical Endocrinology Postgraduate Training Course, 3rd Endocrine Surgery Basic Training Workshop 17-20 November 2011 Antalya "Hypocalcemia After Thyroidectomy" Speaker: Ömer Bender
6. New Horizons in Surgery congress, Harbiye Military Museum 13-15 March 2015, Istanbul, "Marking and Ductal Imaging in Breast Surgery" Speaker: Ömer Bender
7. 3rd Black Sea Breast Congress, 26-28 March 2015 Anemon Hotel Samsun. "Approach to Nipple Discharge" Speaker: Ömer Bender
8. Skin and Cellular Treatment Applications, Little Known Symposium, Maslak Acıbadem Hospital 24-25 March 2017 Maslak / Istanbul. Session Chair: Prof. Dr. Ömer Bender
9. Istanbul University Department of Physiology Spring Term Seminars "Diagnosis and Treatment of Nipple Discharge" Speaker: Prof. Dr. Ömer Bender 22 March 2017 Cerrahpaşa Faculty of Medicine / Istanbul
10. Science Days 6 Istanbul Yeni Yüzyıl University 8-9 May 2017. Session 6. Session Chair: Prof.Dr.Ömer Bender
11. Istanbul Yeni Yüzyıl University YENİSARUM Healthy Life Symposium-1 "Al"Having Alzheimer's, Living with a Patient with Alzheimer's Symposium" 12 May 2017 4th Session Chairman. Prof. Dr. Ömer Bender
12. 14th National Breast Diseases Congress 19-22 October 2017 Antalya. "Breast Cancer Information Update Course with Cases. 13.30–14.10 Case1: DCİS Panelist Prof. Dr. Ömer Bender
13. World Radiology Day, Radiology Technician Past and Present Panel "The Importance of Radiology in Terms of Surgery" Istanbul Yeni Yüzyıl University 14 November 2017 Speaker: Prof. Dr. Ömer Bender
14. National Health Services Vocational Schools Symposium 15-18 November 2017. Silence Hotel Istanbul Convention Center Ataşehir/Istanbul Session Chair: Prof. Dr. Ömer Bender