Canalplasty for Exostosis
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2025-03-08
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Open Access Atlas of Otolaryngology, Head & Neck Operative Surgery
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University of Cape Town
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Abstract
Exostosis is an abnormal benign bony growth within the external ear canal. It is frequently multiple and bilateral and is very common in individuals with repeated exposure to cold water and wind. Patients may develop conductive hearing loss and/ or recurrent ear infections due to trapped water and earwax between the tympanic membrane and the exostosis. Retention of cerumen and keratin in the external ear canal (EAC) associated with recurrent episodes of external otitis. The findings are partial or total obstruction of the bony external ear canal and retention of cerumen. In some cases, it is not possi-ble to visualize the eardrum at all. It is important to assess the cartilaginous entrance to the ear canal in order to plan for a meatoplasty at a later stage (Figures 1, 2).
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Britto, L. & Linder, T. 2025. Canalplasty for Exostosis. In Open Access Atlas of Otolaryngology, Head & Neck Operative Surgery. J. Fagan, Ed.Cape Town, South Africa: University of Cape Town. 11. http://hdl.handle.net/11427/43534 .