Medical School

Hacettepe University Faculty of Medicine-1994

Post-Graduate Training

Hacettepe University Faculty of Medicine-1995-1999

Professional Experience

Ankara Bayındır Hospitals-1999-2002 

Abant İzzet Baysal University İzzet Baysal Faculty of Medicine-2002 Assistant Professor

Abant İzzet Baysal University İzzet Baysal Faculty of Medicine-2006 Associate Professor

Medical University of South Carolina Medical Faculty Head&Neck Surgery - research fellow-2003, USA

Clinics Universitaires UCL de Mont Godinne , Service d'oto-rhino-laryngologie et de chirurgie cervico-faciale - observer - Fonocerrahi -2011, Belgium

Abant İzzet Baysal University İzzet Baysal Faculty of Medicine-2014 Professor


Medical Interests

Voice Diseases and Surgery- Phonosurgery

Functional and Aesthetic Nasal Surgery-; septoplasty , septorhinoplasty , rhinoplasty

Endoscopic Sinus Surgery

Head and Neck Cancer Surgery

Salivary Gland Diseases and Surgery

Sleep Respiratory Disorders and Surgery

Ear Diseases and Surgery

Prominent ear surgery-otoplasty

Tonsil and Adenoid (Tonsil and Adenoid) Surgery

Botox applications

Scientific Publications

1.Unal OF, Koybasi S, Kaya S. Sinus histiocytosis with massive lymphadenopathy ( Rosai - Dorfman disease ). int . J. Pediatr . Otorhinolaryngol 1998; 44: 173-176 
2. Sarac S, Koybasi S, Kaya S. Transmaxillary excision of a rare cavernous hemangioma of the infratemporal fossa _ ENT Ear , Nose & Throat Journal 2000 Jun 79 (6) 448-52. 
3. Koybasi S, Saydam L, Kutluay L. Intraosseous Hemangioma of the zygoma _ american Journal 
of Otolaryngology , 2003;24:3:194-197. 
4. Koybasi S, Saydam L, Gungen Y. Histiocyting necrotizing Lymphadenitis of the Neck : 
American Journal of Otolaryngology , 2003;24:5:344-347. 
5. Saydam L, Koybasi S, Kutluay L. Laryngeal chondroma presenting as an external neck mass . 
european Archives of Auto- Rhino - Laryngology 2003;260:239-241. 
6. Koybasi S, Senkal CE, Sundararaj K, Spassieva S, Bielawski J, Osta W, Day TA, Jiang JC, Jazwinski SM, Hannun YA, Obeid LM, Teacher B. Defects in cell growth regulation by C18:0- ceramide and longevity assurance gene 1 in human head and neck squamous cell carcinoma . J Biol chem . 2004 Oct 22;279(43):44311-9. Epub 2004 Aug 17. 
7. Rossi MJ, Sundararaj K, Koybasi S, Phillips MS, Szulc ZM, Bielawska A, Day TA, Obeid LM, 
Hannun YA, Teacher B. Inhibition of growth and telomerase activity by novel cationic in the ceramide analogs with high solubility in human head and neck squamous cell carcinoma cells . otolaryngol Head neck Surg . 2005 Jan;132(1):55-62. 
8. Koybasi S, Yilmaz T, The Effect of L- Carnitine on Wound healing by secondary Intention in an 
Animal Model. Wounds 2005; 17(3):62-66. 
9. Bright AH, Koybasi S, Boran C, Ibrahimbas Y. Lipoid Proteinosis : An unusual presentation with verruca vulgaris _ Journal of Dermatology 2005; 32 (9) 751-5. 
10. Koybasi S. Extrusion of autologous septal cartilage graft after rhinoplasty _ otolaryngol Head 
Neck Surg . 2006 Mar;134(3):526-7. 
11. Senkal CE, Ponnusamy S, Rossi MJ, Sundararaj K, Szulc Z, Bielawski J, Bielawska A, Meyer M, 
Cobanoglu B, Koybasi S, Sinha D, Day TA, Obeid LM, Hannun YA, Teacher B. Potent antitumor activity of a novel cationic pyridinium - ceramide alone or in combination with gemcitabine against human head and neck squamous cell carcinomas in vitro and in vivo . J Pharmacol exp ther . 2006;317(3):1188-99. 
12. Koybasi S, Parlak AH, Serin E, Yilmaz F, Serin D. Recurrent aphthous stomatitis : investigation of possible etiologic factors . Am J Otolaryngol . 2006;27(4):229-32. 
13. Yilmaz F, Karabay O, Talay F, Koybasi S, Kocoglu E The effect of triamcinolone acetonide aqueous nasal spray on the nasal carriage of Staphylococcus aureus _ AmJ Rhinol . 
2006;20(3):248-50.14. Bright AH, Koybasi S, Yavuz T, Yesildal N, Anul H, Aydogan I, Cetinkaya R,Kavak A. Prevalence 
of oral lesions in 13- to 16-year-old students in Duzce , Turkey . Oral Dis . 2006;12(6):553-8 
15. Karaaslan K, Kocoglu H, Yilmaz F, Koybasi S, Celebi S, Ekerbicer H.Relation between middle ear pressure changes and postoperative nausea and vomiting in pediatric strabismus surgery _ J Clin Anesth . 2007 Mar;19(2):101-4 
16. Karahatay S, Thomas K, Koybasi S, Senkal CE, Elojeimy S, Liu X, Bielawski J, Day TA, Gillespie MB , Sinha D, Norris JS, Hannun YA, Teacher B. Clinical prelevance of ceramide metabolism in the pathogenesis of human head and neck squamous cell carcinoma (HNSCC): attenuation of C(18)- ceramide in HNSCC tumors correlates with lymphovascular invasion and nodal metastasis.Cancer let . 2007;18;256(1):101-11. 
17. Yildiz SK, Koybasi S, Turkoglu SA, Yildiz N, Korkmaz B, Akyurek F. Sympathetic skin responses 
from posturicular region in Meniere's disease . Clin neurophysiol . 2007;118(9):1991- 8.4 
18. Gurel K, Virtual SK, Gurel S, Kalfaoglu M, Boran C. Two maxillary lesions containing bony / calcified shells _ Dentomaxillofac radial _ 2009;38(5):296-300. 
19. Koybasi S, Suslü AE, Yigit B, Boran C. Acquired toxoplasmosis of the buccal area with extranodules involvement : report of an unusual case . ear nose Throat J. 2009;88(12):E12-4. 
20. Süslü AE, Polat M, Koybasi S, Biçer YO, Funda YO, Parlak AH. inner ear involvement in 
Behçet's disease . auris nasus larynx _ 2010;37(3):286-90. 
21. Köybaşı S, Süslü AE, Tezcan E, Atasoy HI, Biçer YO, Boran C. Submandibular gland 
pleomorphic adenoma in a seven- year - old child : a case report . Ear Nose Throat Ihtis Derg . 
2010;20(4):210-3.22. Koybasi S, Atasoy HI, Bicer YO, Tug E. Cochlear involvement in family Mediterranean Fever: 
a new feature of an old disease . Int J Pediatr Otorhinolaryngol . 2012;76(2):244-7 
23. Tug E, Atasoy HI, Koybasi Virtual S. Thrombophilia gene mutations in oculoauriculovertebral spectrum . genetics Counseling _ 2012 23(1):65-72. 
24. Koybasi S, BoztaS H, Bicer YO, Serin E, Suslu AE, Ongun Funda Y, Sereflican M. The effect of melatonin on tinnitus with respect to sleep and depression : A randomized clinical trial . J Advanced Otol 2012; 8(2): 201-208. 
25. Bicer , YO, Koybasi S, Suslu AE, Kukner A, Tezcan E, Ulas N. Effect of Heparin on 
Inflammation ; An Animal Model of Tracheal Stent Laryngoscope 2014;124(9):E368-72 
26. Yusuf Özgür Biçer, Selcan Kesgin, Erkan Tezcan, Serap Köybaşı . Facial , Cervical , and mediastinal Emphysema of the Clarinet Player: Case Report. Balkan Med J 2014; 31: 360-362 
27. Serap Koybasi , Sinan Seyhan, Yusuf Ozgur Bicer , Aysegul Uner , Aysun Yesilirmak . nasal type natural killer T- cell lymphoma involving nasooropharynx and larynx _ the Turkish Journal of Ears nose and Throat 2014;24(6):364-67. 
28. Bicer YO, Koybasi S, Kazaz H, Seyhan S Effect of n-Butyl-2-cyanoacrylate on the Tensile Strength and pressure Resistance of Tracheal anastomoses Ex viva . otolaryngol Head neck Surg . 2015 Feb;152(2):297-301. 
29. Bicer YO, Koybasi S, Tezcan E, Yılmaz F. Malignant eccrine spiradenoma of the external ear . 
( the Turkish Journal of Ears nose and Throat .) Ear Nose Throat Ihtis Derg . 2015;25(4):245-8 
30. Bicer , Y. O ., Koybasi , S., Seyhan, S., Fırat , T., Kazaz, H. Outcomes from cyanoacrylate use in tracheal anastomosis in a rat model. Otolaryngol-Head neck Surg . 2015;153(5): 815-821. 
31. Tonuk SB, Koybasi S, Bicer YO, Alkan Temel S. Bone mineral density measurements in otosclerosis using dual-energy X-ray absorptiometry . Clin otolaryngol . 2016 Apr;41(2):149-53. 
32. Köybaşı Şanal S, Biçer YÖ, Kükner A, Tezcan E. Effect of Pregnancy on Vocal cord Histology : An Animal Experiment. Balkan Med J, 2016, 33(4): 448. 
33. Korkmaz T, Koybasi S, Biçer YO ., Serin E., Seyhan S. Salivary α- Amylase levels in vertigo : Can it be an autonomic dysfunction ? Ear , Nose & Throat Accepted for 
Journal Publication. 17.04.2017 34. Satisfaction in rhinoplasty : the possible impact of anxiety and functional outcome _ Koybasi S, Bicer YO, Seyhan S, Kesgin S. Eur Arch Otorhinolaryngol . 2018 Mar;275(3):729-733. doi : 
10.1007 /s00405-017-4860-9. 
35. Kilicgun A, Ozgur Bicer Y, Cevat Kutluk A, Seyhan S, Koybasi Virtual S. The effect of polyglycolic acid mesh application in tracheal anastomoses on pressure and tensile strength : an ex in vivo experimental study _ Curr Thorac Surg .2019; 4(1): 008-012.

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