Lorida O. DVM, PhD Student, Companion Animal Clinic, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece | Tontis D. DVM, PhD, Associate Professor, Laboratory of Pathology, School of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece | Patsikas M. Veterinarian, Doctor, PhD, Professor, Imaging Diagnostics Unit, School of Veterinary Medicine, Aristotle University of Thessaloniki | Papadimitriou S. DVM, DDS, Associate Professor, Companion Animal Clinic, Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
Introduction
Odontogenic keratocysts are rare in dogs and they do not usually recur following treatment. This presentation’s aim is to discuss a case of recurrent odontogenic keratocyst, treated with caudal mandibulectomy.
Clinical case
A twelve-year-old, male intact, West highland terrier dog presented to the Companion Animal Clinic due to swelling, located caudally on the left mandible. Clinical examination and intraoral radiography revealed a radiolucent area, in the area of the second and third molars. Biopsies were sent for histopathological examination and the teeth among the surrounded matrix were removed. Histopathology revealed an odontogenic keratocyst. Six months postoperatively, a fistula was identified at the same site. Computed tomography showed a lesion extending from the first molar to the coronoid process. A caudal mandibulectomy was performed, with the anterior border within healthy tissue.
Results
The animal started eating soft food during the same day, and dry food fifteen days postoperatively. One year later, the dog remains clinically healthy.
Conclusions
Odontogenic keratinocysts are severely infiltrative locally and lead to bone destruction. Diagnosis requires histopathological examination and imaging. When their epithelium is not completely excised, they are very extensive or they recur, partial mandibulectomy is indicated, with very good prognosis.
