title: Proliferative and necrotising otitis externa in a cat without pinnal involvement: video-otoscopic features.
abstract: Proliferative and necrotising otitis externa is a rare and recently described disease affecting the ear canals and concave pinnae of kittens. This article describes a case of proliferative and necrotising otits externa in a young adult cat. In this case, the lesions did not affected the pinnae, but both ear canals were severely involved. Video-otoscopy revealed a digitally proliferative lesion, growing at 360° all around the ear canals for their entire length, without involvement of the middle ear. Histopathological examination confirmed the diagnosis, and the cat responded completely to a once-daily application of 0.1% tacrolimus ointment diluted in mineral oil in the ear canals. Video-otoscopy findings, not described previously, were very peculiar and may help clinicians to diagnose this rare disease.
authors.affiliation: Servizi Dermavet, Torino and Legnano, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Borio
authors.forename: Federico
authors.initials: F
authors.lastname: Massari
authors.forename: Francesca
authors.initials: F
authors.lastname: Abramo
authors.forename: Silvia
authors.initials: S
authors.lastname: Colombo
mesh_terms: D000818:Animals; D002371:Cat Diseases / Q000175:diagnosis* / Q000188:drug therapy* / Q000473:pathology; D002415:Cats; D004423:Ear / Q000473:pathology; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D008297:Male; D009336:Necrosis / Q000188:drug therapy / Q000662:veterinary*; D010032:Otitis Externa / Q000188:drug therapy / Q000473:pathology / Q000662:veterinary*; D016559:Tacrolimus / Q000627:therapeutic use; D016896:Treatment Outcome
chemical_list: D007166:Immunosuppressive Agents; D016559:Tacrolimus