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- Title
External auditory canal's osteoma: diagnostic and therapeutic approach.
- Authors
Antunes Lira, Wilker; Werner Picinini, Ingrid; Pires Dinarte, Vanessa Ramos; Soto Chillcce, Karina Angelica; Errera de Freitas Pereira, André Luís
- Abstract
Introduction: Osteomas are benign bone tumors that have a predilection for the craniofacial region, whose most common location in the temporal bone is the external auditory canal (EAC). In general, they are unilateral and pedunculated lesions of unknown etiology, but there are associations with previous trauma, radiotherapy, congenital factor or hormonal dysfunction. Objectives: To report a case of EAC osteoma, due to its low incidence in the literature. Case report: KDLR, 17 years old, without past pathological history, complained of progressive hearing loss on the right for 2 years, associated with episodes of intermittent otorrhea and otalgia. At otoscopy, a hardened lesion was observed, obliterating the entire right EAC. Among the audiometric tests, pure tone audiometry showed conductive hearing loss of moderate degree on the right, but tympanometry could not be performed due to significant canal obstruction. Computed tomography of the temporal bone showed a hyperdense lesion with regular edges, restricted at EAC. Contralateral examinations were normal. A surgical approach was then chosen through the Lempert I incision, followed by detachment and removal of the lesion - approximately 2 cm in the longest axis - with scope. After 45 days postoperatively, the EAC was re-epithelialized, tympanic membrane was intact, anatomopathological confirmation and tonal audiometry within the normal range. Conclusion: Most osteomas are asymptomatic, however they can develop hearing loss and/or recurrent infections. In these cases, surgical treatment is indicated, and the technique must be chosen considering the extent of the disease and risks and benefits of each one of them.
- Subjects
EAR canal; AUDIOMETRY; THERAPEUTICS; TEMPORAL bone; HEARING disorders; OTITIS externa; CONDUCTIVE hearing loss
- Publication
International Archives of Otorhinolaryngology, 2022, Vol 26, p49
- ISSN
1809-9777
- Publication type
Case Study