Small Animal Dermatology, 3rd edition

500 DISEASES/DISORDERS

Survival times 6 months after surgery (Bostock): grade I, 77% alive; grade 2, 45%

alive; grade 3, 13% alive

Lymph node metastasis: survival may be prolonged if prednisolone and

chemotherapy are given after the primary tumor and affected lymph node(s)

are aggressively excised.

 Cats:
Solitary cutaneous tumor: prognosis excellent; rate of recurrence low (16–36%)

despite incomplete excision;<20% of patients develop metastasis

Survival after splenectomy for splenic tumor: reports of>1 year

Concurrent development of mastocythemia: prognosis poor; prednisone and

chemotherapy may achieve short-term remission

Intestinal tumor: prognosis poor; survival times rarely>4 months after surgery.

Fig. 33.1.Urticarial reaction from manipulation of a mast cell tumor on an 11-year-old female-spayed pit
bull terrier.