Journal of the American Animal Hospital Association 40:82-85 (2004)
© 2004 American Animal Hospital Association
Ureteral Mast Cell Tumor in a Dog
Michele Steffey, DVM,
Kenneth M. Rassnick, DVM, Diplomate ACVIM,
Brian Porter, DVM and
Bradley L. Njaa, DVM, MVSc, Diplomate ACVP
From the Departments of Clinical Sciences (Steffey, Rassnick) and Biomedical Sciences (Porter, Njaa), College of Veterinary Medicine, Cornell University, Ithaca, New York 14853.
A 6-year-old, castrated male, mixed-breed dog was diagnosed with partial unilateral ureteral obstruction secondary to a ureteral mass. The ureteral mass was surgically resected, and an ureteroneocystostomy was performed. Histopathology of the ureteral mass was consistent with a poorly differentiated mast cell tumor (MCT). The patient recovered well but was euthanized 5 months postoperatively for central nervous system signs. A choroid plexus tumor was diagnosed during necropsy examination. There was no evidence of recurrence or dissemination of the ureteral MCT. Extracutaneous MCTs are rare in dogs, and primary MCT associated with the urinary tract has not previously been reported in the veterinary literature.
Copyright © 2004 by the American Animal Hospital Association.
