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Extensive Bilateral Odontogenic Cysts in the Mandible of a Dog

Division of Companion Animal Studies, Bristol University, UK

Abstract

A 5-year-old female neutered Boxer dog was diagnosed with extensive odontogenic cysts that affected the left and right mandibles. Rostral mandibular swelling was detectable clinically, and bilateral cystic mandibular lesions were identified radiographically. The dog's owners elected for euthanasia. A full postmortem was performed. Cystic cavities were confirmed in the body of each mandible, extending from the incisor teeth to the mid premolar region. Incisor, canine, and premolar tooth roots indented each cavity. Histologic examination of the cystic cavities reflected an inner lining of attenuated stratified squamous epithelium overlying a fibrous layer infiltrated by a mixed, predominantly mononuclear, inflammatory infiltrate.

Key words: Bilateral; cyst; dogs; mandible; mononuclear infiltrate; odontogenic.

Request reprints from Mr Ivan Doran, Small Animal Hospital, Division of Companion Animal Studies, Langford School of Clinical Veterinary Science, Bristol, BS40 5DU (UK). E-mail: ivan.doran{at}bristol.ac.uk