Feline cutaneous hemangiosarcoma: a retrospective study of 18 cases (1998-2003). 
Cutaneous hemangiosarcoma (HSA) has been infrequently reported in dogs and cats.  Medical records of 18 cats diagnosed with cutaneous HSA were reviewed.  Age at the time of diagnosis, breed, sex, tumor location, tumor size, treatment type, survival time, disease-free interval, and cause of death were evaluated.  Aggressive surgical excision of the tumor was attempted in 10 cats.  A complete surgical excision was achieved in five of the 10 cats.  Median survival times were statistically longer in cats that underwent surgery versus cats that did not.  Cats with cutaneous HSA treated with aggressive surgical excision of their tumors may have a good long-term prognosis.