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Peer-reviewed veterinary case report

Multiple follicular cysts causing ear canal swelling in a dog

By Gatineau, Matthieu et al.·Published in Journal of the American Animal Hospital Association·2010·Department of Clinical Sciences, Canada·View original on PubMed

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Original publication title: Multiple follicular cysts of the ear canal in a dog.

Species:
dog

Plain-English summary

An 11-year-old standard schnauzer was brought in for recurring ear infections and swelling around the right ear that had been going on for six months. The vet found that the ear canal was severely narrowed, making it hard to see inside. After some imaging and tests, they discovered multiple follicular cysts in the ear canal, which were causing the problems. The dog underwent surgery to remove the affected ear canal, and this treatment successfully resolved the issues.

People also search for: dog ear infection treatment · schnauzer ear cysts · ear canal surgery for dogs

Abstract

An 11-year-old, 18-kg, neutered male standard schnauzer was presented for evaluation of recurrent otitis externa with para-aural swelling and fistulation of the right external ear canal of 6 months' duration. Otoscopic examination was impossible because of the severe stenosis of the ear canal. Right para-aural ultrasound examination and ultrasound-guided fine-needle aspiration of a mass-like lesion were performed. Cytology was suggestive of a follicular cyst. Magnetic resonance imaging revealed severe ear canal stenosis with a heterogeneous mass in the horizontal portion of the ear canal and associated otitis media. Total ear canal ablation with lateral bulla osteotomy was performed. Histopathological diagnosis was chronic otitis externa associated with multiple follicular cysts confined to the ear canal. Surgical treatment proved curative. This is the first report of multiple follicular cysts originating from the ear canal in a dog.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/20194366/