A retrospective analysis was performed on the case records of 32 dogs with Stage I or II splenic hemangiosarcoma that were treated by splenectomy alone and that survived the seven-day postoperative period. Median survival time for these 32 cases was 86 days (mean, 116 days; range, 14 to 470 days), and the one-year survival rate was estimated to be 6.25%. Survival was not influenced by signalment, presenting signs, stage of disease, or clinicopathological findings. The data provides a basis from which to evaluate adjuvant chemotherapy for splenic hemangiosarcoma that is confined to the spleen macroscopically.
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