Indications to surgical treatment are ear pain, progressive hearing loss and recurrent otitis external. Internal auditory canal osteomas (IACOs) are rare, slow-growing, and benign bone tumors.
Osteomas and exostoses may lead to hearing loss. Exostosis is the overgrowth of the external auditory canal's compact bone in adults. ICD-10-CM H60.90 is grouped within Diagnostic Related Group (s) (MS-DRG v40. Inflammation of the outer ear including the external ear canal, cartilages of the auricle (ear cartilage), and the tympanic membrane.
OSTEOMAS EAR CANAL SKIN
Osteomas are benign tumours leading to obstruction of the external auditory canal. An acute or chronic inflammatory process involving the skin of the outer ear and the ear 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. Osteomas arising from the mastoid bone, however, are rare 4. 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. Osteomas are frequently seen within the paranasal sinuses and less frequently in the external ear canal. To assess epidemiological and clinical data and surgical treatment effectiveness. The treatment of these entities may present a therapeutic dilemma. Osteomas and exostoses of the external auditory canal are benign tumours arising in bones, leading to its obstruction and causing hearing loss. External auditory canal (EAC) osteoma is an uncommon benign lesion which is usually asymptomatic, but symptoms can arise if a canal obstruction occurs resulting.
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