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Pathology of Exostosis of the External Ear

Dr Sampurna Roy MD   

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Exostoses of the external auditory canal are benign bony tumours very common in individuals who frequently participate in aquatic activities.

Currently, most researchers agree that the environment (especially water temperature, but also atmospheric temperature and wind action) plays a pivotal role in the development of this trait.

Aural exostoses are typically firm, sessile, multinodular bony masses usually arise from the tympanic ring of the bony portion of the external auditory canal.

Although most of the cases are asymptomatic, patients with more severe exostoses have recurrent episodes of external otitis and related conductive hearing loss.

In the great majority of these cases, a medical treatment (aspiration and antibiotic drops) resolves the symptoms.

Patients with more severe canal stenosis, resistant to medical treatment, are candidates for surgical removal of the exostoses.

Visit: Ear Pathology Online  ;

Visit: Osteoma of Ear (external auditory canal and middle ear) ;

Visit: Benign Fibro-Osseous Lesion of the External Ear

Further reading:

Exostoses of the external auditory canal. Is the cold water hypothesis valid for patients in continental areas? 

Auditory exostoses as an aquatic activity marker: a comparison of coastal and inland skeletal remains from tropical and subtropical regions of Brazil.

Exostosis of the internal auditory canal in a patient with myotonic dystrophy

Exostoses of the external auditory canal: a long-term follow-up study of surgical treatment.

Surfer's ear: external auditory exostoses are more prevalent in cold water surfers.

Exostosis of the external auditory canal: a technical note.

Results and extraordinary complications of surgery for exostoses of the external auditory canal .

External ear canal exostosis and aquatic sports.

Prevalence of external auditory canal exostoses in surfers

Exostoses of the external auditory canal.

The prevalence of exostoses in the external auditory meatus of surfers.

Surgical treatment of exostosis in the external auditory canal .

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Dr Sampurna Roy  MD

Consultant  Histopathologist (Kolkata - India)







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