Indications to surgical treatment are ear pain, progressive hearing loss and recurrent otitis external. Overview Osteomas are benign, slow growing bony tumors involving the base of the skull and paranasal sinuses. Otitis externa, also called swimmer’s ear, is an infection of the ear canal that can trigger swelling that may seem like a bump in the ear. Its presence in mandible and paranasal sinuses is common, yet appearance in. Osteomas and exostoses may lead to hearing loss. Osteoma is benign tumor composed of well- differentiated matured osseous tissue. Exostosis is the overgrowth of the external auditory canal's compact bone in adults. Osteomas are benign tumours leading to obstruction of the external auditory canal. The auditory canal was successfully reamed, the hearing improved in all patients. Histological examination confirmed benign overgrowth of compact and trabecular bone. Exostoses were removed via intrauricular, intracanal or postauricular approach. Osteomas were removed via intrauricular approach according to Mawson-Goodhill's method. In all patients: conductive hearing loss ranged from 15 to 30 dB (average 29.9 dB), in 6 patients with concomitant sensorineural component. Bilateral exostoses occured in 12 patients in anterior, posterior and inferior wall of the external auditory canal. Unilateral osteomas developing in tympanosquamous suture in 5 patients, in tympanomastoid suture in 4. The results of audiometric, radiological and histopathological examination were taken into consideration. The study group consisted of 21 patients (14 men and 7 women) between 18 to 63 years of age, treated in the Otorhinolaryngology Department of Medical University of Gdańsk from 1995 to 2009. To assess epidemiological and clinical data and surgical treatment effectiveness.
It is estimated that it is more common in males. The literature suggests that ear canal osteomas can affect a wide range of age groups starting in the second decade of life. The incidence is estimated to be less than 0.5. The treatment of these entities may present a therapeutic dilemma. Ear canal osteomas are slow-growing, benign tumors that can develop in the bony external auditory canal. Osteomas and exostoses of the external auditory canal are benign tumours arising in bones, leading to its obstruction and causing hearing loss.
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