External auditory canal osteoma

Last revised by Tariq Walizai on 5 Oct 2024

External auditory canal osteomas are rare focal pedunculated bony overgrowths of the osseous external auditory canal.

Radiographic features

  • solitary pedunculated bony overgrowth of the external auditory canal usually at the bony cartilaginous junction

  • unilateral

  • large lesions may be associated with earwax, debris or secondary cholesteatoma

Differential diagnosis

Cases and figures

  • Case 1
  • Case 2
  • Case 3
  • Case 4
  • Case 5
  • Case 6
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