External auditory canal exostoses

Last revised by Dr Ayla Al Kabbani on 19 Oct 2021

Exostosis of the external auditory canal (also known as surfer's ear), is a benign bony overgrowth of the bony external auditory canal brought about by exposure to cold wind and water combined.

Radiographic features

  • broad-based or more focal circumferential bony overgrowth of the osseous external auditory canal
  • bilateral

Differential diagnosis

See also

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Cases and figures

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  • Case 4
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