External auditory canal osteoma

External auditory canal osteoma is a rare focal pedunculated bony overgrowth 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 wax, debris or secondary cholesteatoma

Differential diagnosis

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Article information

rID: 46947
System: Head & Neck
Section: Pathology
Tag: cases
Synonyms or Alternate Spellings:

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Cases and figures

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