Exostosis of the external auditory canal (also known as Surfer's ear), is an abnormal bone growth within the ear canal. It is brought about by exposure to cold wind and water combined, producing a super-cooling of the ear canal.
- broad based or more focal circumferential bony overgrowth of the osseous external auditory canal
External auditory canal osteoma: unilateral focal, pedunculated bony overgrowth.
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