External auditory canal osteoma

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

Article information

rID: 46947
System: Head & Neck
Synonyms or Alternate Spellings:
  • EAC osteoma
  • External ear canal osteoma

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Cases and figures

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  • Case 2
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  • Case 3
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