Unilateral Intraocular Osteosarcoma in a Welsh Corgi

Abstract

Summary: a 13-year-old female Welsh Corgi was treated for refractory glaucoma. Ultrasound examination suggested an intraocular tumor. Computer tomography (CT) revealed hyperattenuating lesions in the affected eye. enucleation was performed and intraocular osteosarcoma was diagnosed by histopathology. The tumor recurred at the surgical area on the 46th day after surgery. intracranial tumor invasion was suspected based on clinical signs, and the dog was euthanized. Based on this case, CT scanning may be useful for detecting primary intraocular osteosarcoma. These tumors may show malignant behavior and severe local invasiveness compared with other types of intraocular tumors.