B-cell lymphoblastic lymphoma of the nictitating membrane as the first presenting sign in a 2-year-old Springer Spaniel.

B-cell lymphoblastic lymphoma is an aggressive malignant disease. Necropsy and microscopical examination revealed widespread disease with a high proliferation index. This is the first reported case of B-cell lymphoblastic lymphoma presenting in the ocular region and only the second reported lymphoma of the nictitating membrane.

Discrepancy in compliance between the clinical and genetic diagnosis of choroidal hypoplasia in Danish Rough Collies and Shetland Sheepdogs.

Collie eye anomaly (CEA) is a congenital, inherited ocular disorder which is widespread in herding breeds. Clinically, the two major lesions associated with CEA are choroidal hypoplasia (CH) and coloboma, and both lesions are diagnosed based on ophthalmological examination. A 7.

Prevalence and heritability of distichiasis in the English Cocker spaniel.

Background: Canine distichiasis is a well-known cause of ocular irritation and excessive lacrimation (secretion of tears) in the dog. The term distichiasis originates from the Greek words di and stichos meaning two and rows, respectively, and as the name implies, the condition is characterized by an additional row of cilia, which erupts on the eyelid margin. Many purebred dogs are known to be predisposed to the condition, with many affected individuals within the populations.

Keratoacanthoma of the spectacle in a Boa constrictor.

Animal Studied: A Royal Boa constrictor presented with retained spectacle of the right eye and a tumor-like appearance of the left eye.

Procedure: The snake was euthanized, the head fixed in buffered formaldehyde, and histologic examination of both spectacles and both eyes performed.

Results: The left orbital rim encircled a solid, scaly mass projecting 5-6 mm from the spectacular area.