Prof. Dr. med. Orhan Kocaman

Gastroenterologist

EDUCATION:

Istanbul University, Cerrahpasa Faculty of Medicine (English), Istanbul, Turkey, MD (1999)
Internal Medicine Residency at Istanbul University, Istanbul Faculty of Medicine, Istanbul, Turkey (2004)
Gastroenterology Residency at Kocaeli University, Department of Gastroenterology, Kocaeli, Turkey (2008)

AREAS OF EXPERTISE:

Chronic hepatitis B and C
Liver diseases
Inflammatory bowel diseases (Ulcerative Colitis and Crohn’s disease)
Gastroesophageal reflux disease
Peptic ulcer disease
Acute and Chronic pancreatitis
Therapeutic endoscopy:
ERCP
EUS
POEM
ESD
EMR
Balloon placement for obesity
GI stenting
Gastric botox
Endoscopic treatment for GERD: ARMS (Anti-reflux mucosectomy) proc.; Stretta proc.,
and MEDIGUS proc.
Band ligation for varices
Percutaneous endoscopic gastrostomy

MEMBERSHIP:

American Association for the Study of Liver Diseases
European Crohn´s and Colitis Organisation
Turkish Gastroenterology Association
Turkish Association for the study of Liver

PUBLICATIONS:

A. International:
A1. M. Özkan, M. Cakıroğlu, O. Kocaman, M. Kurt, B.Yılmaz, G. Can, U. Korkmaz, E.Dandil ve Z. Eksi,. “Age-based computer-aided diagnosis approach for pancreatic cancer on endoscopic ultrasound images,“ Endosc Ultrasound, Mar-Apr;5(2), 101-7 (2016).
A2. A. Dur, O. Kocaman, A. Koçyiğit, KA Türkdoğan, E. Sönmez, S. Keskin, M. Yiğit, B.Gülen, E. Kılıç E ve Ö. Uysal, “ Oxidative status and lymphocyte DNA damage in patients with acute pancreatitis and its relationship with severity of acute pancreatitis,” Turk J Gastroenterol. Jan;27(1), 68-72 (2016).

A3. Y. Kayar, A. Danalıoğlu, O. Kocaman, B. Baysal ve H. Şentürk, “Eltrombopag: How secure in triple therapy of HCV?” Acta Gastroenterol Belg. Dec;78(4), 445-6 (2015).
A4. Y. Kayar, O.Pamukçu, H. Eroğlu, K. Erol Kalkan, A. Ilhan ve O. Kocaman, “Relationship between Helicobacter pylori Infections in Diabetic Patients and Inflammations, Metabolic Syndrome, and Complications” Int J Chronic Dis. 2015:290128 (2015)
A5. S. Köklu, MT. Gülşen, Y. Tuna, H. Köklu, O. Yüksel, M. Demir, R. Güner, Z. Doğan, M. Küçükazman, OK. Poyrazoğlu, M. Bıyık, NA. Özturk, T. Aydoğan, S. Çoban, O. Kocaman, F. Sapmaz, SH. Göktürk, Ç. Karaca, A. Demirezer, A. Tanoğlu, B. Yıldırım, A. Altınbaş, BM. Atak, AM. Coşar, E. Alkan ve diğerleri, “Differences in nephrotoxicity risk and renal effects among anti-viral therapies against hepatitis B” Aliment Pharmacol Ther. Feb;41(3), 310-9 (2015)
A6. AT. Eminler, C. Aygün, T. Konduk, O. Kocaman, Ö. Şentürk, A. Çelebi, Y. Gürbüz ve S. Hülagü, “The relationship between resistin and ghrelin levels with fibrosis in nonalcoholic fatty liver disease” J Res Med Sci. Nov;19(11), 1058-61 (2014).
A7. O. Kocaman, B. Baysal, H. Şentürk, AT. İnce, M. Müslümanoğlu, E. Kocakoç, S. Arıcı, Ö. Uysal, K. Yıldız, K. Türkdoğan ve A. Danalıoğlu, “Staging of rectal carcinoma: MDCT, MRI or EUS. Single center experience” Turk J Gastroenterol. Dec; 25(6), 669-73 (2014)
A8. O. Kocaman, “MR enterography: still complementary to SES-CD for evaluation of ileal Crohn’s disease” Turk J Gastroenterol. Aug;25(4), 458 (2014)
A9. AT. Ince, O. Kocaman, M. Ismailova, M. Tozlu, Z. Gücin ve M. Iraz, “A rare coexistence of Helicobacter pylori, Candida albicans and Candida keyfr in a giant gastric ulcer” Turk J Gastroenterol. Aug;25(4), 435-6 (2014)

A10. K. Yıldız, AT. İnce, A. Kemik Sarbay, S. Sert, HC. İsen, M. Tozlu, B. Baysal, U. Akyüz, O. Kocaman ve A. Danalıoğlu, “A Role of serum myeloperoxidase, CPK, CKMB, and cTnI tests in early diagnosis of myocardial ischemia during ERCP” Turk J Gastroenterol. Jun;25(3), 291-7 (2014)

A11. AT. İnce, K. Yıldız, B. Baysal, A. Danalıoğlu, O. Kocaman, M. Tozlu, V. Gangarapu, A. Kemik Sarbay, Ö. Uysal ve H. Şentürk, “Roles of serum and biliary CEA, CA19-9, VEGFR3, and TAC in differentiating between malignant and benign biliary obstructions” Turk J Gastroenterol. Apr;25(2), 162-9 (2014)
A12. AT. İnce, O. Kocaman, K. Yıldız, B. Baysal, M. Tozlu, U. Akyüz, A. Danalıoğlu ve H. Şentürk, “Endoscopic repair of duodenal perforation with over-the-scope clipping system and endoclips: a case report” Turk J Gastroenterol. Feb;25(1), 103-5 (2014)
A13. O. Kocaman, “Understanding tuberculous peritonitis: a difficult task to overcome” Turk J Gastroenterol. Feb;25(1), 79-80 (2014)
A14. AT. İnce, H. Şentürk, VK. Singh, K. Yıldız, A. Danalioğlu, A. Çınar, Ö. Uysal, O. Kocaman, B. Baysal ve A. Gürakar, “A randomized controlled trial of home monitoring versus hospitalization for mild non-alcoholic acute interstitial pancreatitis: a pilot study” Pancreatology. May-Jun;14(3), 174-8 (2014)
A15. C. Karatoprak, E. Arabacı, K. Yıldız, M. Çakırca, MA. Çıkrıkçıoğlu, F. Ergun, A. Danalıoğlu, O. Kocaman ve H. Şentürk, “Gastroenterology cases of cutaneous leukocytoclastic vasculitis” Case Rep Med. 2013:264189 (2013)
A16. O. Kocaman, H. Şentürk, A. Danalıoğlu, K. Türkdoğan, E. Arabacı, K. Yıldız ve AT İnce, “Endosonography and elastography in the diagnosis of esophageal tuberculosis” Turk J Gastroenterol. 24(3), 290-1 (2013)

A17. O. Kocaman, A. Danalıoğlu, AT. İnce, M. Tozlu ve H. Şentürk, “Diagnosis of tuberculous peritonitis using endoscopic ultrasound-guided fine-needle aspiration biopsy of the peritoneum” Turk J Gastroenterol. 24(1), 65-9 (2013)
A18. A. Danalıoğlu, G. Çipe, T. Toydemir, O. Kocaman, AT İnce, M. Müslümanoğlu ve H Şentürk, “Endoscopic stapling in comparison to laparoscopic fundoplication for the treatment of gastroesophageal reflux disease” Dig Endosc. Jan;26(1), 37-42 (2014)
A19. S. Kır, Y. Aydın, O. Kocaman, G. Celbek, O. Kudaş, H. Coşkun, FH. Beşir ve AC Kılıç, “Acute pancreatitis after severe opthalmic adenoviral infection” Acta Gastroenterol Belg. Jun;74(2), 361-2 (2011)
A20. S. Hülagü, Ö. Şentürk, C. Aygün, O. Kocaman, A. Çelebi, T. Konduk, D. Koç, G. Şirin, U. Korkmaz, AE Duman, N. Bozkurt, G. Dindar, T. Attila, Y. Gürbüz, O. Tarçın ve C. Kalaycı, “Endoscopic submucosal dissection for premalignant lesions and noninvasive early gastrointestinal cancers” World J Gastroenterol. Apr 7;17(13), 1701-9 (2011)
A21. Akçakaya A., O.V. Özkan, G. Baş, A. Karakelleoğlu, O. Kocaman, İ. Okan ve M. Şahin, “Mechanical lithotripsy and/or stenting in management of difficult common bile duct Stones,” Hepatobiliary Pancreat Dis Int, Oct;8(5), 524-8 (2009).
A22. Çelebi A., O. Kocaman, H. Savlı, C. Aygün, T.B. Konduk, Ö. Şentürk ve S. Hülagü, “The prevalence of CYP2C19 mutations in Turkish patients with dyspepsia,” Turk J Gastroenterol, Sep;20(3),161-4 (2009).
A23. Akçakaya A., O.V. Özkan, İ. Okan, O. Kocaman ve M. Şahin, “Endoscopic retrograde cholangiopancreatography during pregnancy without radiation,” World J Gastroenterol, Aug 7;15(29), 3649-52 (2009).
A24. Kocaman O., M. Sipahi, A. Çubukçu, Z.N. Baykara ve S. Hülagü, “Porous diaphragm syndrome after ERCP in a patient with bile duct stricture,” Turk J Gastroenterol, Jun;20(2), 157-8 (2009).
A25. Kocaman O., G. Kocaman ve Ö. Şentürk, “Severe migraine attacks during treatment of chronic hepatitis C,” Eur J Intern Med, May;20(3),e74 (2009).
A26. Kocaman O., A. Alponat, C. Aygün, Y. Gürbüz, H.T. Sarısoy, A. Çelebi, Ö. Şentürk ve S. Hülagü, “Lower gastrointestinal bleeding, hematuria and splenic hemangiomas in Klippel-Trenaunay syndrome: a case report and literature review,” Turk J Gastroenterol,
Mar;20(1), 62-6 (2009).
A27. Kocaman O., C. Aygün, T. Konduk, A. Çelebi, Ö. Şentürk ve S. Hülagü, “Infliximab treatment of massive upper gastrointestinal bleeding in gastroduodenal Crohn’s disease,” Turk J Gastroenterol, Sep;19(3), 197-8 (2008).
A28. Kocaman O., S. Hülagü ve Ö. Şentürk, “Echinacea-induced severe acute hepatitis with features of cholestatic autoimmune hepatitis,” Eur J Intern Med, Mar;19(2),148 (2008).
A29. Kocaman O., C. Aygün, T. Konduk, A. Çelebi, Ö. Şentürk ve S. Hülagü, “Pegylated interferon treatment of acute pericarditis associated with acute hepatitis C,” Turk J Gastroenterol, Dec;18(4), 268-71 (2007).
A30. Aygün C., O. Kocaman, T. Şahin, S. Uraz, A.T. Eminler, A. Çelebi, Ö. Şentürk ve S. Hülagü, “Evaluation of metabolic syndrome frequency and carotid artery intima-media thickness as risk factors for atherosclerosis in patients with nonalcoholic fatty liver disease,” Dig Dis Sci, May;53(5),1352-7 (2008).

A31. Kocaman O., C. Aygün, T. Konduk, A. Çelebi, Ö. Şentürk ve S. Hülagü, “Pieces of trash bag in the stomach,” Turk J Gastroenterol, Sep;18(3), 210-1 (2007).
A32. Hülagü S., Ö. Şentürk, C. Aygün, Y. Gürbüz, O. Kocaman, A. Çelebi ve T. Konduk, “Granular cell tumor of esophagus removed with endoscopic submucosal dissection,” Turk J Gastroenterol, Sep;18(3), 188-91 (2007).
A33. Aygün C., O. Kocaman, Y. Gürbüz, Ö. Şentürk ve S. Hülagü, “Clindamycin-induced acute cholestatic hepatitis,” World J Gastroenterol, Oct 28;13(40), 5408-10 (2007).
A34. Özgül R.K., İ. Satman, G.B. Collin, E.G. Hinman, J.D. Marshall, O. Kocaman, Y. Tütüncü, T. Yılmaz ve J.K. Naggert, “Molecular analysis and long-term clinical evaluation of three siblings with Alström syndrome,” Clin Genet, Oct;72(4), 351-6 (2007).
A35. Şentürk Ö., O. Kocaman, S. Hülagü, T. Şahin, C. Aygün, T. Konduk ve A. Çelebi, “Endothelial dysfunction in Turkish patients with non-alcoholic fatty liver disease,” Intern Med J, Mar;38(3),183-9 (2008).
A36. Aygün C., O. Kocaman ve Ö. Şentürk, “Adiponectin: is it a novel treatment modality to alleviate liver injury in non-alcoholic fatty liver disease (NAFLD)?,” Med Hypotheses, 70(2), 457-8 (2008).
A37. Kocaman O., C. Aygün, Y. Gürbüz, A. Çefle, T. Konduk, Ö. Şentürk, A. Çelebi ve S. Hülagü, “Burst of autoimmunity with the emergence of primary Sjogren syndrome, cholestatic autoimmune hepatitis and latent autoimmune diabetes of adults (LADA),” South Med J, Sep;99(9),1014-5 (2006).
A38. Kocaman O., T. Şahin, C. Aygün, Ö. Şentürk ve S. Hülagü, “Endothelial dysfunction in patients with ulcerative colitis,” Inflamm Bowel Dis, Mar;12(3), 166-71 (2006).
A39. Akyüz F., Ü. Akyüz, O.Kocaman ve S. Kaymakoğlu, “Rare complication of interferon alpha therapy: retinal vein thrombosis,” Acta Gastroenterol Belg, Jul-Sep; 68(3), 394-5 (2005).
A40. Oflaz H., S. Alışır, B. Büyükaydın, O. Kocaman, F. Turgut, Ş. Namlı, B. Pamukçu, A. Öncül ve T. Ecder, “Biventricular diastolic dysfunction in patients with autosomaldominant polycystic kidney disease,” Kidney Int, Nov;68(5), 2244-9 (2005).
A41. Kocaman O., H. Oflaz, E. Yekeler, M. Dursun, Ş. Demirel, S. Alışır, F. Turgut, S. Umman ve T. Ecder, “Endothelial Dysfunction and Increased Carotid Intima-Media Thickness in Patients with Autosomal Dominant Polycystic Kidney Disease,” Am J Kidney Dis, May;43(5), 854-60 (2004).
A42. Erdoğan D., T. Tükek, F. Aral, H. Oflaz, M. Özaydın, O. Kocaman, V. Akkaya, T. Gören ve S. Molvalılar, “Structural, functional and autonomic changes in the cardiovascular system in growth hormone deficient patients,” Ann Noninvasive Electrocardiol, Jan;9(1),19-23 (2004).
A43. Erdoğan D., O. Kocaman, H. Oflaz ve T. Gören, “Alveolar hemorrhage associated with warfarin therapy: a case report and literature review,” Int J Cardiovasc Imaging, Apr;20(2), 155-9 (2004).
A44. Mercanoğlu F., A. Türkmen, O. Kocaman, B. Pınarbaşı, M. Dursun, F. Selçukbiricik ve M.S. Sever, “Endothelial dysfunction in renal transplant patients closely related to serum cyclosporine levels,” Transplant Proc, Jun;36(5),1357-60 (2004).
A45. Mercanoğlu F., H. Oflaz, A. Türkmen, O. Kocaman, B. Bunyak, B. Umman, E. Yekeler, E. Kaşıkçıoğlu, M. Meriç, Ş. Demirel, M. Küçük ve M.S. Sever, “Does the endothelial function change in renal transplant patients with longer duration of exposure
and with higher cumulative doses of cyclosporine?,” Transplant Proc, Jun;36(5),1361-6 (2004).
A46. Oflaz H., A. Türkmen, O. Kocaman, D. Erdoğan, M. Meriç, A. Öncül, N. Koylan, E. Yılmaz, C. Yılmaz, F. Selçukbiricik, E. Kaşıkcıoğlu ve M.S. Sever, “Is there a relation between duration of cyclosporine usage and right and left ventricular function in renal
transplant patients?: Tissue Doppler Echocardiograpy study,” Transplant Proc, Jun; 36(5),1380-4 (2004).
D. National:
D1. Beşışık S.K., O. Kocaman, B. Erer, M. Yenerel, Ö. Doğan ve D. Sargın, “The outcome of Large B-cell lymphoma evolving after hemotopoietic stem cell transplant patient during treatment of chronic graft versus host disease,” Turk J Haematol, 20(3),171-4 (2003).
D2. Bunyak B., H. Oflaz, A. Türkmen, G. Acartürk, O. Kocaman, D. Erdoğan, M. Sezer, Ö. Karaman, S. Uzun, B. Pınarbaşı, F. Erzengin ve M.S. Sever, “The Importance of QT dispersion in patients with renal transplantation,” İst Tıp Fak Mecmuası, 65:4, 263-8
(2002).
D3. Pınarbaşı B., H. Oflaz, B. Umman, Y. Nişancı, H. Boztepe, D. Erdoğan, G. Acartürk, T. Özyiğit, O. Kocaman ve F. Alagöl, “The evaluation of myxedema in the light of literature,” İst Tıp Fak Mecmuası, 66:3, 178-82 (2003).
D4. Topbaş A., A.K. Bilge, F. Selçukbiricik, O. Kocaman, H. Oflaz, Ö. Soyluk ve N. Koylan, “The effect of Losartan on the plasma level of prolactin, thyrotropin (TSH), and cortisol in patients with mild and moderate essential hypertension,” İst Tıp Fak Mecmuası, 67:4, 224-8 (2004).
D5. Kocaman O. ve Ö. Şentürk, “Alkol Dışı Karaciğer Yağlanması Hastalığı (ADYKH),” Clinic Medicine (Bilimsel ve Güncel Tıp Dergisi), 51-9 (2008).
D6. Yılmaz E., S. Güvenç, O. Kocaman ve E. Kıyan, “İdiyopatik hipereozinofilik sendromlu bir hastada gelişen akut ağır myokardit,” Türk Kardiyol Dern Arş, 30, 265-268 (2002).

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