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    Dermoid cyst of the parotid gland: First pediatric case
    (Elsevier Ireland Ltd, 2010) Tas, Abdullah; Yagiz, Recep; Altaner, Semsi; Karasalihoglu, Ahmet R.
    A dermoid cyst is the result of inclusion of epithelial cells along the lines of embryonic closure. Dermoid cysts of the head neck are uncommon and account for only 7% of all such cysts. They are most often reported as arising in the floor of the mouth. Dermoid cyst is rarely seen in the parotid gland. To our knowledge, there have been only six previous case reports in the English literature. Dermoid cyst of the parotid gland in pediatric patient has not been previously reported in the literature. This is the first case report concerning a dermoid cyst in a pediatric patient. (C) 2009 Elsevier Ireland Ltd. All rights reserved.
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    Effects of Intratympanic Steroid on Cisplatin Ototoxicity: An Electrophysiological and Ultrastructural Study
    (Akad Doktorlar Yayinevi, 2018) Tas, Abdullah; Bulut, Erdogan; Tas, Memduha; Yagiz, Recep; Turan, Pinar; Huseyinoglu, Aydin; Karasalihoglu, Ahmet R.
    Ototoxicity refers to the inner ear dysfunction caused by a drug or a chemical agent which manifests as hearing loss or balance impairment, or both. Currently, antibiotics, diuretics, anti-inflammatory drugs, antineoplastic agents, antimalarial drugs and some other agents are known to cause ototoxicity. Cisplatin is an antineoplastic agent for which the ototoxicity incidence may vary based on the treatment protocol. In the present study, we aimed to perform an electrophysiological and ultrastructural evaluation regarding the protective effectiveness of intratympanic steroids on cisplatin ototoxicity. Electrophysiological assessment included tympanometry and auditory brainstem response (ABR), and 16 guinea pigs (32 ears) with normal hearing were randomly assigned to 4 groups as follows: control, cisplatin, cisplatin/steroid and cisplatin/physiological saline. Following the electrophysiological measurements, temporal bones were dissected for ultrastructural examinations. In the cisplatin group, a statistically significant (p<0.05) threshold difference was noted for the ABR test versus the other groups while this threshold difference was lower in the cisplatin/steroid group compared to the other groups. Ultrastructural evaluations revealed abnormal outer hair cell stereocilia morphology and severe degenerative changes in the cisplatin and cisplatin/physiological saline groups. Mild degenerative alterations were seen in the outer hair cell stereocilia morphology in the guinea pig cochlea administered with intratympanic steroid. We believe intratympanic steroid administration showed protective effectiveness on the cisplatin-induced ototoxic damage in our study.
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    Laryngeal Chondroma: A Rare Diagnosis in This Localization
    (Hindawi Ltd, 2011) Tastekin, Ebru; Altaner, Semsi; Uzun, Cem; Karasalihoglu, Ahmet R.; Ozdemir, Cigdem; Kutlu, Ali Kemal
    Primary chondroid tumors of the larynx represent less than 1% of all laryngeal tumors. Most of them are chondromas and they often involve to the cricoid cartilage. A 31-year-old male patient applied to the oto-laryngology service with a history of dysphonia and dyspnea. Microlaryngoscopy revealed 2 cm sized, ill-defined, covered with regular mucosa, porous, and hard mass on posterior surface of crycoid cartilage in subglottic area. Following the excision of the lesion, histopathologic examination revealed as chondroma. Two years later, local recurrence was detected and the diagnosis was again chondroma. There was no complaint of the patient in last 3 and half years of follow-up. Chondroma should carefully be differentiated from chondrosarcoma and the patients should be followed for possible recurrences.