Abstract
Due to the aggressive biological behavior, a large number of studies attempt to identify the prognostic indicators for feline mammary carcinoma (FMC). In this study, we retrospectively identified the prognostic indicators and evaluated the effect of surgery with or without adjuvant chemotherapy on 47 cats with FMCs. Over a two-year follow-up period, surgical removal was significantly associated with greater overall survival time (OST). In cats that underwent surgical treatment, median OST was longer in cats that underwent surgery with adjuvant chemotherapy (540 days) than cats that underwent surgery without chemotherapy (398 days). In addition, cats with FMCs in early stage (I or II) had longer OST than cats in advanced stages. Further, through multivariate analyses, the histological grade was found to be significantly associated with a survival of two years. Cats with FMCs at high grade were most likely to have a mean or median OST of less than one year. In summary, stage, grade and the size of tumor were all prognostic factors, in which histological grade was found to be the only significant factor in cats with mammary carcinomas through multivariate analysis.
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