Kostniaki i wyrośla kostne przewodu słuchowego zewnętrznego w materiale Kliniki Otolaryngologii Gdańskiego Uniwersytetu Medycznego
Journal Title: Otolaryngologia Polska - Year 2010, Vol 64, Issue 6
Abstract
SUMMARY Introduction: Osteomas and exostoses of the external auditory canal are benign tumours arising in bones, leading to its obstruction and causing hearing loss. The treatment of these entities may present a therapeutic dilemma. Aim of the study: To assess epidemiological and clinical data and surgical treatment effectiveness. Subjects and methods: The study group consisted of 21 patients (14 men and 7 women) between 18 to 63 years of age, treated in the Otorhinola-ryngology Department of Medical University of Gdańsk from 1995 to 2009. The results of audiometric, radiological and histopathological examination were taken into consideration. Results: Unilateral osteomas developing in tympanosquamous suture in 5 patients, in tympanomastoid suture in 4. Bilateral exostoses occured in 12 patients in anterior, posterior and inferior wali of the external auditory canal. In all patients: conductive hearing loss ranged from 15 to 30 dB (average 29.9 dB), in 6 patients with concomitant sensorineural component. Osteomas were removed via intrauricular approach according to Mawson-Goodhill's method. Exostoses were removed via intrauricular, intracanal or postauricular approach. Histological examination confirmed benign overgrowth of compact and trabecular bone. The auditory canal was successfully reamed, the hearing improved in all patients. Conclusions: Osteomas are benign tumours leading to obstruction of the external auditory canal. Exostosis is the overgrowth of the external auditory canal's compact bone in adults. Osteomas and exostoses may lead to hearing loss. Indications to surgical treatment are ear pain, progressive hearing loss and recurrent otitis external.
Authors and Affiliations
Jerzy Kuczkowski, Małgorzata Potocka, Grażyna Kobierska-Gulida, Tomasz Przewoźny, Mirosława Dubaniewicz-Wybieralska
Keywords
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