Carcinoma of an accessory genital gland in a 23-year-old Camargue gelding.

This report describes the case management, histopathological and post mortem findings in a 23-year-old gelding with a peri-rectal mass. The mass was debulked surgically and submitted samples revealed it to be a poorly differentiated carcinoma. In the post operative period the horse developed signs of abdominal pain and dysuria and was subjected to euthanasia. Post mortem examination revealed a large infiltrative mass located between the rectum and urethra, consistent with a carcinoma of an accessory genital gland, most likely the seminal vesicle. [ABSTRACT FROM AUTHOR]