Ahmet Köybaşıoğlu is a Professor and Doctor who was born in 1958. He entered Ankara University Faculty of Medicine in 1975 and completed his education, graduating in 1981. He completed his specialization in Ear, Nose and Throat (ENT) at Gazi University Faculty of Medicine between 1982-1986.

While working as an ENT specialist at Ankara Dışkapı SSK Hospital, he also worked at the Antoni van Leeuwenhoek Cancer Research Center in the Netherlands. In 1997, he became an associate professor in the ENT Head and Neck Surgery department at Gazi University, and in 2003, he became a full professor.

In 1998, he worked on cases with his American colleagues at the Massachusetts Eye and Ear Infirmary in the United States. He conducted academic research for 16 years from 1996-2012, focusing on head and neck tumors. He also deepened his academic research in laryngology, which includes vocal cord and voice disorders.

He specialized in voice hoarseness, snoring, respiratory problems, dizziness, as well as nodules, polyps and vocal cord cysts in the larynx. His medical interests also include pediatric ENT diseases such as tonsillitis, adenoids, fluid accumulation in the ear, and congenital neck cysts.

He conducted academic research and publications on tumors and cancer diseases that occur in the mouth, nose, tongue, jaw, throat, and skin areas in the head and neck region. These diseases are his primary medical interest areas.

2003-2103 Gazi University, Department of Otorhinolaryngology, Professor,
2005(September-October) Antoni van Leeuwenhoek Cancer Center Amsterdam/Netherlands,
1997-2003 Gazi University, Department of Otorhinolaryngology, Associate Professor,
1998(November-December) Massachusetts Eye and Ear Infirmary /Boston-USA,
1995-1997 Gazi University, Department of Otorhinolaryngology, Assistant Professor,
1993(January-March) Antoni van Leeuwenhoek Cancer Center Amsterdam/Netherlands,
1982-1986 Gazi University Faculty of Medicine / Ear Nose and Throat Specialization Training,
1975-1981 Ankara University Faculty of Medicine

2016-2018 Lösante Hospital,
2014-2016 Memorial Ankara Hospital,
2012-2014 Acıbadem Healthcare Group Ankara Hospital,
2003-2013 Gazi University, Department of Otorhinolaryngology, Professor,
2005(September-October) Antoni van Leeuwenhoek Cancer Center Amsterdam/Netherlands,
1997-2003 Gazi University, Department of Otorhinolaryngology, Associate Professor
1998 (November-December) Massachusetts Eye and Ear Infirmary,
1995-1997 Gazi University, Department of Otorhinolaryngology, Assistant Professor,
1993(January-March) Antoni van Leeuwenhoek Cancer Center Amsterdam/Netherlands,
1990-1995 Ankara Diskapi SSK Hospital ll. ENT Clinic Specialist,
1988-1990 Bayburt State Hospital/Mandatory Service,
1986-1988 Adana Military Hospital, Ear Nose and Throat Specialist,
1982-1986 Gazi University Faculty of Medicine / Ear Nose and Throat Specialization Training

Head and Neck Oncology
Voice Hoarseness
Pediatric Ear Nose Throat Diseases
Elongated Styloid Prosthesis
Congenital Neck Tumors
Salivary Gland Tumors

Laryngology Association Rhinology Association

Otology Neurootology Society

Turkish Ear Nose and Throat Association Ankara Otolaryngology Association

Scientific Publications and Articles

Gökdoğan O, Koybasioglu A, Advanced F. Laryngeal Chondroma: An Unusual Complication Endotracheal Entubation.J Craniofac Surg. 2016 Jun;27(4):1007-9

Gökdoğan O, Demirhan B, Koybasioglu A, Advanced F. Clinical Characteristics of Recurrent Juvenile Nasopharyngeal Angiofibroma (JNA) After Radiation Therapy. Indian J Otolaryngol Head Neck Surg. 2015 Dec;67(4):425-9.

Aydil U, Akmansu M, Gumusay Ö, Bakkal FK, Yazıcı Ö, Kızıl Y, Köybaşıoğlu A, Yıldız R, Büyükberber S, İnal E. Comparison of three different concurrent chemoradiation regimens for treatment of laryngeal cancer.Eur Arch Otorhinolaryngol. 2016 Sep;273(9):2795-803.

Aydil U, Duvvuri U, Kizil Y, Köybaşıoğlu A. Tumour-node-metastasis staging of human papillomavirus negative upper aerodigestive tract cancers- a critical appraisal. J Laryngol Auto. 2015 Oct 8:1-8.

Gökdoğan O, Koybasioglu A, Ismail E, Erol T, Alagoz G, Yagmurlu B, Komurcu

S. Hoarseness- an unusual presentation of primary thyroid lymphoma with laryngeal infiltration. Braz J Otorhinolaryngol. 2015 Sep 7.

Gökdoğan O, Koybasioglu A. Recurrent Lymphoepithelial Carcinoma of the Parotid Gland. J Craniofac Surg. 2015 Sep;26(6):e543-5.
Gökdoğan O, Demirhan B, Köybaşıoğlu A, Advanced F. An unusual mass of nasal cavity- recurrent glomangiopericytoma. Ear Nose Bogaz Ihtis Journal. 2015 Jul- Aug;25(4):2404.
Güzeldir OT, Aydil U, Kizil Y, Akyildiz I, Köybaşıoğlu A. The effect of infrahyoid muscle sectioning on hyoid bone position and oropharyngeal air column volume. laryngoscope 2015 Jun;125(6):1480-4.
Gökdoğan O, Keskin G, Koybasioglu A, Ileri F. Lateral skull base destruction-unusual clinical progress of lymphoma. J Craniofac Surg. 2014 Jul;25(4):e373-5.
Kızıl Y, Aydil U, Ekinci O, Dilci A, Köybaşıoğlu A, Düzlü M, Inal E. Salivary gland tumors in Turkey- demographic features and histopathological distribution of 510 patients. Indian J Otolaryngol Head Neck Surg. 2013 Jul;65(Suppl1):112-20.
Aydil U, Kızıl Y, Grocery FK, Köybaşıoğlu A, Uslu S. Neoplasms of the hard palate. J Oral Maxillofac Surg. 2014 Mar;72(3):619-26.
Aydil U, Akmansu M, Kizil Y, Yazici O, Ustun S, Karaloglu F, Koybasioglu A.
An individualized treatment algorithm for tumor stage 1 glottic squamous cell carcinoma. J Laryngol Auto. 2013 Nov;127(11):1127-33.

Ceylan A, Asal K, Çelenk F, Köybaşıoğlu A. Parotid gland involvement as a presenting feature of Wegener's granulomatosis. Singapore Med J. 2013 Sep;54(9):e196-8.
Kızıl Y, Aydil U, Cebeci S, Köybaşıoğlu A, Yılmaz M, Inal E. [Pharyngocutaneous fistula rates after total laryngectomy in the organ preservation era]. Ear Nose Bogaz Ihtis Journal. 2013 Jan-Feb;23(1):10-4.
Köybaşıoğlu A, Colak M, Akyürek N, Kızıl Y, Aydil U. [A parotid gland lymphoma presenting with steroid-responsive recurrent sialadenitis- a case report]. Ear Nose Bogaz Ihtis Journal. 2012 May-Jun;22(3):172-5.
Aydil U, Kizil Y, Köybaşıoğlu A. Less known non-infectious and neuromusculoskeletal system-originated anterolateral neck and craniofacial pain disorders. Eur Arch Otorhinolaryngol. 2012 Jan;269(1):9-16.
Tutar H, Erdamar H, Koybasioglu A, Dinc AE, Ceylan A, Uslu S. Can even acids be an etiological factor for laryngeal carcinoma? ORL J Autorhinolaryngol Relat Spec. 2011;73(3):156-61.

Bozdayi G, Kemaloglu Y, Ekinci O, Dogan B, Ilhan MN, Aydil U, Akyol
G, Koybasioglu A, Inal E, Rota S. Role of human papillomavirus in the clinical

and histopathologic features of laryngeal and hypopharyngeal cancers. J Otolaryngol Head Neck Surg. 2009 Feb;38(1):119-25.

Ceylan A, Köybaşıoğlu A, Celenk F, Yilmaz O, Uslu S. Surgical treatment of elongated styloid process- experience of 61 cases. Skull Base. 2008 Sep;18(5):289-95.

Turkyilmaz Z, Karabulut R, Bayazit YA, Sonmez K, Koybasioglu A, Yilmaz M, Kemaloglu YK, Basaklar AC. Congenital neck masses in children and their embryologic and clinical features. I WOULD LIKE A CUT OF T-BONE. 2008;4(1):7-18.
Aslan S, Uslu S, Köybaşıoğlu A, Oz O, Ileri F, Ozbilen S. [Use of dehydrated temporal fascia in chronic otitis media surgery and tympanoplasty]. Ear Nose Bogaz Ihtis Journal. 2008;18(1):31-4.
Sari S, Eminoğlu FT, Belen FB, Dalgic B, Hasanoğlu A, Sonağa OL, Köybaşıoğlu A. Congenital cricopharyngeal achalasia- a rare cause of dysphagia in an infant. Turk J Pediatr. 2007 Apr-Jun;49(2):193-5.
Aydil U, Ekinci O, Köybaşıoğlu A, Kizil Y. Hyoid bone insertion tendinitis: clinicopathologic correlation. Eur Arch Otorhinolaryngol. 2007 May;264(5):557-60.
Bayazit YA, Erdal ME, Yilmaz M, Ciftci TU, Soylemez F, Gokdogan T, Kokturk O, Kemaloglu YK, Koybasioglu A. Insulin receptor substrate gene polymorphism is associated with obstructive sleep apnea syndrome in men. laryngoscope 2006 Nov;116(11):1962-5.
Ural A, Köybaşıoğlu A, Yilmaz G, Akyürek N, Ataoğlu O. [Kimura's disease of the parotid gland- a case report]. Ear Nose Bogaz Ihtis Journal. 2006;16(1):45-8.
Rinaldo A, Elsheikh MN, Ferlito A, Chone CT, Coskun HH, Köybasiŏglu A, Esclamado RM, Corlette TH, Talmi YP. Prospective studies of neck dissection specimens support preservation of sublevel IIB for laryngeal squamous carcinoma with clinically negative neck. J Am Coll Surg. 2006 Jun;202(6):967-70.
Ozbilen S, Aydil U, Dinç AE, Kizil Y, Köybasioglu A. Relationship between tumor- node-metastasis stage of laryngeal squamous cell carcinoma and duration of symptoms. J Laryngol Auto. 2006 Jun;120(6):482-6.
Koybaşioğlu A, Bora Tokçaer A, Inal E, Uslu S, Koçak T, Ural A. Accessory nerve function in lateral selective neck dissection with undissected level IIb. ORL J Autorhinolaryngol Relat Spec. 2006;68(2):88-92.
Ural A, Köybaşıoğlu A, Ceylan A, Uslu S. [Auricular arteriovenous fistula-a case report and therapeutic approach]. Ear Nose Bogaz Ihtis Journal. 2005;14(1-2):29-31.
Uzum N, Akyol G, Asal K, Köybaşıoğlu A. Ameloblastic carcinoma containing melanocyte and melanin pigment in the mandible- a case report and review of the literature. J Oral Pathol Med. 2005 Nov;34(10):618-20.
Simsek B, Koybasioglu A, Yucel E, Gunhan O. Chondrosarcoma of the parapharyngeal space. A case report. Int J Oral Maxillofac Surg. 2005 Oct;34(7):803-5.
Ural A, Köybaşıoğlu A, Uslu S, Ceylan A, Asal K, Ileri F. [Epiglottic anteversion in the etiology of globus pharyngeus and its surgical management]. Ear Nose Bogaz Ihtis Journal. 2004;13(5-6):122-5.
Ceylan A, Köybaşıoğlu A, Yilmaz M, Uslu S, Asal K, Inal E. Thyroid gland invasion in advanced laryngeal and hypopharyngeal carcinoma. Ear Nose Bogaz Ihtis Journal. 2004;13(1-2):9-14.
Inal E, Laçin M, Asal K, Ceylan A, Köybaşıoğlu A, Ileri F, Uslu SS. The significance of ferritin, lipid-associated sialic acid, CEA, squamous cell carcinoma (SCC) antigen, and CYFRA 21-1 levels in SCC of the head and neck. Ear Nose Bogaz Ihtis Journal. 2004;12(1-2):23-30.
Asal K, Köybaşıoğlu A, Inal E, Ural A, Uslu SS, Ceylan A, Ileri F. Sternocleidomastoid muscle flap reconstruction during parotidectomy to prevent Frey's syndrome and facial contour deformity. Ear Nose Throat J. 2005 Mar;84(3):173-6.
Ceylan A, Köybaşıoğlu A, Asal K, Kizil Y, Inal E. [The effects of pharyngeal neurectomy and cricopharyngeal myotomy on postoperative deglutition in patients undergoing horizontal supraglottic laryngectomy]. Ear Nose Bogaz Ihtis Journal. 2003 Dec;11(6):170-4.
Kokturk N, Demir N, Kervan F, Dinç E, Koybasioglu A, Turktas H. A subglottic mass mimicking near-fatal asthma- a challenge of diagnosis. J Emerg Med. 2004 Jan;26(1):57-60.

Köybaşıoğlu A, Oz O, Uslu S, Ileri F, Inal E, Unal S. Comparison of pharyngoesophageal segment pressure in total laryngectomy patients with and without pharyngeal neurectomy. Head Neck. 2003 Aug;25(8):617-23.
Koybasioğlu A, Uslu S, Yilmaz M, Inal E, Ileri F, Asal K. Lymphatic metastasis to the supraretrospinal recess in laryngeal squamous cell carcinoma. Ann Otol Rhinol Laryngol. 2002 Jan;111(1):96-9.
Uslu SS, Ileri F, Köybaşıoğlu A, Celik H, Sargon M, Ozbilen S. Scanning electron microscopy of hydroxylated polyvinyl acetal and conventional gauze strip nasal packing materials. AmJ Rhinol. 2001 Mar-Apr;15(2):91-4.
Köybaşıoğlu A, Ileri F, Gençay S, Poyraz A, Uslu S, Inal E. Submandibular accessory salivary gland causing Warthin's duct obstruction. Head Neck. 2000 Oct;22(7):717-21.
Köybasioglu A, Tokcaer AB, Uslu S, Ileri F, Beder L, Ozbilen S. Accessory nerve function after modified radical and lateral neck dissections. laryngoscope 2000 Jan;110(1):73-7.

Ileri F, Köybaşioĝlu A, Uslu S. Clinical presentation of a sphenochoanal polyp. Eur Arch Otorhinolaryngol. 1998;255(3):138-9.
Goksu N, Kemaloglu

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