Bilateral Sterile Pyogranulomatous Keratitis in a Dog

Purpose. To describe the clinicopathologic features of bilateral sterile pyogranulomatous keratitis in a 16-year-old spayed female rat terrier dog. Methods. Te dog presented one year prior due to ulceration of the right and lef corneas. Te ulcers healed but plaques developed on both eyes which progressed, during the course of one year, to cover both the lef and the right corneas. Due to the animal’s loss of sight and its painful condition, bilateral enucleation was performed with submission of the eyes for histopathology. Results. Microscopic examination revealed bilateral pyogranulomatous keratitis absent of etiological organisms. Conclusions. To the authors’ knowledge, this is the frst documented case of bilateral sterile pyogranulomatous keratitis in a dog