A Rectum Leiomyoma in a Dog

Abstract

An 11-year-old spayed Shiba dog of mixed-breed was brought in with an one-year history of dyschezia. Surgically, a huge mass was found adhering to the urethra, ureter, and urinary bladder, and was removed successfully. The mass was pathologically diagnosed as a leiomyoma originating from the rectum. The dog had acute postoperative renal failure caused by temporary dysuria, but became able to urinate unaided soon. In spite of having difficulty in defecation, the dog has survived with antibiotics and a low fat diet.