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Evaluation of outcome associated with subcutaneous and intramuscular hemangiosarcoma treated with adjuvant doxorubicin in dogs: 21 cases (2001-2006)

Archived Abstract of Former PSC Researcher

Bulakowski, E.J., J.C. Philibert, S. Siegel, C.A. Clifford, R. Risbon, Kara Zivin, and K.L. Cronin. 2008. "Evaluation of outcome associated with subcutaneous and intramuscular hemangiosarcoma treated with adjuvant doxorubicin in dogs: 21 cases (2001-2006)." Javma-Journal of the American Veterinary Medical Association, 233(1): 122-128.

Objective-To evaluate outcome associated with subcutaneous and intramuscular hemangiosarcomas treated with adjuvant doxorubicin in dogs. Design-Retrospective case series. Animals-21 dogs. Procedures-Records of dogs with histologically confirmed hemangiosarcoma, no detectable metastasis at initial evaluation, and adequate local tumor control were included. Age, sex, number of treatments, treatment interval, radiation therapy, and concurrent use of cyclophosphamide or deracoxib were evaluated for associations with disease-free interval (DFI) or survival time. Three to 6 cycles of doxorubicin were planned. Disease-free interval was defined as time of definitive surgery to time of local recurrence, metastasis, or both. Survival time was defined as the beginning of the DA to time of death. Results-17 tumors were subcutaneous, and 4 were intramuscular. Median age was 9 years. Median weight was 31.1 kg (68.4 lb). Five dogs received adjuvant radiation therapy. Median DFI for subcutaneous tumors was 1,553 days (95% confidence interval [CI], 469 days to not estimable). Median DFI for intramuscular tumors was 265.5 days (95% CI, 123 to 301 days). Median survival time for subcutaneous tumors was 1,189 days (95% CI, 596 days to not estimable). Median survival time for intramuscular tumors was 272.5 days (95% CI, 123 to 355 days). For dogs with subcutaneous tumors, younger age (< 9 years) was associated with longer DFI and survival time. Dogs with subcutaneous tumors that did not receive radiation therapy had longer DFI. Conclusions and Clinical Relevance-Dogs with subcutaneous hemangiosarcoma had a more favorable outcome, compared with dogs with intramuscular hemangiosarcoma, when treated with adequate local control and adjuvant doxorubicin.

DOI:10.2460/javma.233.1.122 (Full Text)

Country of focus: United States.

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