External auditory canal osteoma

Case contributed by Dr Rupesh Namdev

Presentation

Hearing loss in left ear. Hard swelling in left external auditory canal.

Patient Data

Age: 40 years
Gender: Male
Modality: CT

Bony density lesion attached to the anterior wall of the left external auditory canal through a stalk and almost obliterating the ear canal. Soft tissue seen filling the left external ear.

Case Discussion

External auditory canal osteoma is a slow growing benign neoplasm involving the temporal bone comprising of discrete and pedunculated bone lesion arising along the tympano-squamous suture 1.

They need to be differentiated from exostoses of external auditory canal, which are often bilateral, bony elevations involving the tympanic bone 2.

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Case Information

rID: 27665
Case created: 13th Feb 2014
Last edited: 15th Dec 2015
System: Head & Neck
Inclusion in quiz mode: Included

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