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Dive into the research topics where Ahmet Köybaşıoğlu is active.

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Featured researches published by Ahmet Köybaşıoğlu.


Laryngoscope | 2000

Accessory Nerve Function After Modified Radical and Lateral Neck Dissections

Ahmet Köybaşıoğlu; Ayse Bora Tokcaer; Sabri Uslu; Fikret Ileri; Levent Beder; Suat Özbilen

Objectives: Evaluate preoperative and postoperative electrophysiological changes related to the accessory nerve with reference to dissection technique, modified radical neck dissection, and lateral neck dissection.


Skull Base Surgery | 2008

Surgical treatment of elongated styloid process: experience of 61 cases.

Alper Ceylan; Ahmet Köybaşıoğlu; Fatih Celenk; Oğuz Yilmaz; Sabri Uslu

AIM To describe the management of patients with elongated styloid process syndrome (Eagles syndrome). MATERIALS AND METHODS Sixty-one patients with elongated styloid process were treated between 2000 and 2005. Computed tomography examination defines those whose symptoms suggest the diagnosis. Patients with styloid processes longer than 25 mm were treated by surgical resection. RESULTS Fifty-seven (93.4%) of 61 patients treated for Eagles syndrome became asymptomatic after resection. There were no serious complications. CONCLUSION Patients with clinically and radiologically established elongated styloid process can be managed successfully by surgical resection using an external approach.


Operations Research Letters | 2006

Accessory nerve function in lateral selective neck dissection with undissected level IIB

Ahmet Köybaşıoğlu; Ayse Bora Tokcaer; Erdoğan Inal; Sabri Uslu; Tuğba Koçak; Ahmet Ural

Background: To investigate the accessory nerve function in lateral selective neck dissections (LSND) performed in laryngeal squamous cell carcinoma patients without dissection of level IIB. Methods: Fifteen LSND were performed in 11 N0 laryngeal carcinoma patients with preservation of level IIB. Distal latencies, compound muscle action potentials (CMAP), and electromyography findings were investigated before surgery, during the 3rd postoperative week, and 3 months thereafter to compare the effects of the procedure on the accessory nerve. Results: Distal latencies and CMAP values were significantly lower in the early and late postoperative periods when compared with preoperative values. In 8 patients, there was no motor unit potential (MUP) in the early postoperative period. However, in the late postoperative period, there was no MUP loss. Conclusions: Only temporary functional deterioration of the accessory nerve was seen in patients in whom LSND was performed with undissected level IIB.


European Archives of Oto-rhino-laryngology | 1998

Clinical presentation of a sphenochoanal polyp.

Fikret Ileri; Ahmet Köybaşıoğlu; Sabri Uslu

Abstract Although choanal polyps frequently arise from the maxillary sinus, a choanal polyp originating from the sphenoid sinus is a rare entity. In this report, an unusual case of a large choanal polyp taking origin from the sphenoid sinus is presented. The reasons for its development and methods of management are discussed.


Laryngoscope | 2006

Insulin receptor substrate gene polymorphism is associated with obstructive sleep apnea syndrome in men.

Yildirim A. Bayazit; Mehmet Emin Erdal; M. Yilmaz; Tansu Ulukavak Ciftci; Fatma Soylemez; Tuba Gokdogan; Oguz Kokturk; Yusuf Kemal Kemaloğlu; Ahmet Köybaşıoğlu

Objective: The objective of this study was to assess significance of insulin receptor substrate (IRS) ‐1 gene polymorphism (Gly972Arg) at codon 972 in obstructive sleep apnea syndrome (OSAS).


Operations Research Letters | 2011

Can Bile Acids Be an Etiological Factor for Laryngeal Carcinoma

Hakan Tutar; Hüsamettin Erdamar; Ahmet Köybaşıoğlu; Aykut Erdem Dinç; Alper Ceylan; Sabri Uslu

Purpose: The objective of this study is to show the accumulation of bile acids in laryngeal tissues of laryngeal carcinoma patients. Materials and Methods: The present study compared the total bile acid level in the hypopharyngeal tissue, tumor tissue, and blood of 21 primary laryngeal carcinoma patients (study group) to that in the hypopharyngeal tissue and blood of 15 patients with benign laryngeal lesions (control group). Results: The total bile acid level was significantly higher in the tumor and hypopharyngeal tissues of the study group than in the hypopharyngeal tissues of the control group; however, the difference in the blood total bile acid level between the 2 groups was not significant. Conclusion: Bile acids in reflux material accumulate in the laryngeal tissue in laryngeal carcinoma patients; therefore, bile acids should be considered a carcinogenic factor in the etiology of laryngeal carcinoma because of their mutagenicity due to DNA breaking, as they cause chronic inflammation due to intracellular accumulation.


Head and Neck-journal for The Sciences and Specialties of The Head and Neck | 2003

Comparison of pharyngoesophageal segment pressure in total laryngectomy patients with and without pharyngeal neurectomy

Ahmet Köybaşıoğlu; Övgü Öz; Sabri Uslu; Fikret Ileri; Erdoğan Inal; Selahattin Unal

To compare pharyngoesophageal segment (PES) pressure values in total laryngectomy patients with and without pharyngeal neurectomy (PN) in the early postoperative period.


Head and Neck-journal for The Sciences and Specialties of The Head and Neck | 2000

Submandibular accessory salivary gland causing Warthin's duct obstruction

Ahmet Köybaşıoğlu; Fikret Ileri; Sündüs Gençay; Aylar Poyraz; Sabri Uslu; Erdoğan Inal

Submandibular masses are mostly secondary to sialolithiasis. Salivary gland tumors should be considered in the differential diagnosis. In this case report, an unusual cause of Warthins duct obstruction caused by an accessory salivary gland tissue is presented.


European Archives of Oto-rhino-laryngology | 2012

Less known non-infectious and neuromusculoskeletal system-originated anterolateral neck and craniofacial pain disorders

Utku Aydil; Yusuf Kizil; Ahmet Köybaşıoğlu

Pain syndromes of neuromusculoskeletal origin are not well-known by most of the clinicians working on head and neck area. As a result, most of the patients with these syndromes are either overlooked without having any treatment or they inappropriately have antibiotic treatments or surgical interventions such as dental extractions and tonsillectomies. Better recognition of the pain syndromes of the neck and face region or entities related to neuromusculoskeletal system may result in more appropriate and effective management of such conditions while avoiding unnecessary medical and surgical treatments. In this review, causes, clinical characteristics, diagnostic and treatment modalities of relatively less known craniofacial and neck pain entities including Eagle syndrome, carotidynia, glossopharyngeal neuralgia, superior laryngeal neuralgia, hyoid bone syndrome, acute calcific retropharyngeal tendinitis, temporal tendinitis, thyroid and cricoid cartilage syndromes, and mastoid process syndrome are summarized.


Journal of Laryngology and Otology | 2013

An individualised treatment algorithm for tumour stage 1 glottic squamous cell carcinoma

Utku Aydil; Muge Akmansu; Yusuf Kizil; Ö Yazici; S Üstün; F Karaloğlu; Ahmet Köybaşıoğlu

OBJECTIVE To report and discuss the outcome of a treatment algorithm for patients with tumour stage 1 glottic squamous cell carcinoma. METHOD A retrospective outcome analysis study was performed using data from a tertiary referral centre. RESULTS Sixty-nine patients were treated with radiotherapy and 26 with surgery, in accordance with the treatment algorithm. Five-year overall survival rates were the same for both treatment groups (92 per cent). Five-year disease-specific survival rates were 100 per cent for surgery, 98 per cent for radiotherapy and 99 per cent overall. The overall 5-year laryngeal preservation rate was 89.1 per cent, being 95.7 per cent for surgery patients and 86.7 per cent for radiotherapy patients (p = 0.502). There was no significant association between laryngeal preservation rates and age (p = 0.779), anterior commissure involvement (p = 0.081), tumour stage (1a or 1b) (p = 0.266) or treatment modality (surgery or radiotherapy; p = 0.220). There was no significant difference in local recurrence rates between the two treatment groups (19.3 per cent for radiotherapy vs 10.0 per cent for surgery; p = 0.220). The overall 5-year regional recurrence rate was 1.2 per cent. CONCLUSION Tumour stage 1 glottic carcinoma can be managed with different treatment modalities, following an individualised treatment algorithm, with results comparable to published outcomes.

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