Exostosis of the external auditory canal (Surfer's ear)

Case contributed by Dr Dalia Ibrahim


Pain in both ears with decreased hearing (more at the right side)

Patient Data

Age: 30 years
Gender: Female

Two broad based bony exostoses are seen projecting from the anterior, posterior inferior walls of the right external auditory canal, the largest along its anterior wall measures 1 cm in transverse diameter, they significantly encroach upon the auditory canal lumen.

Two much smaller bony exostoses project from the posterior wall of the left external auditory canal.

Soft tissue densities are plugging both external auditory canals and also encroaching upon their lumens.

Partial opacification and sclerosis of the left mastoid air cells (impressive of chronic mastoiditis).

Multiple bilateral external auditory canal (EUC) exostoses (arrows)

Case Discussion

Exostosis are usually bilateral, multiple and broad based.

Osteomas are usually unilateral, solitary and pedunculated. 

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Case information

rID: 30648
Published: 28th Aug 2014
Last edited: 14th Aug 2019
System: Head & Neck
Inclusion in quiz mode: Included

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