Intraocular ganglioglioma in a dog.

Abstract

An intraocular neoplasm is reported from a 5-1/2-month-old dog, which had had clinical signs of ophthalmic disease for about 3 months prior to exenteration. The vitreous chamber was filled with a subretinal neoplastic mass, which consisted histologically of a mixture of glial cells, nerve cells, nerve fibers, and cells resembling ependyma with some cartilage, bone, and bone marrow. The tumor was diagnosed as a ganglioglioma, a neoplasm which occurs occasionally in human brains and very rarely in human eyes. This is the first report of such a tumor in an animal other than man and the 5th report of it in an intraocular location. As in the human cases, the neoplasm was apparently present at birth or developed shortly thereafter.