Objective: To report a novel presentation of feline hemangiosarcoma.
Animals: A 14-year-old spayed female feline patient diagnosed with hemangiosarcoma of the spleen and a cervical lymph node.
Clinical Presentation, Progression, And Procedures: The patient presented to the emergency service following a 1-week history of lethargy and hiding. Abdominal ultrasound revealed splenomegaly with multiple nodules and peritoneal fluid that was consistent with hemorrhagic effusion.
Treatment And Outcome: The patient underwent a routine splenectomy and was started on doxorubicin. Histopathologic evaluation of the spleen confirmed visceral hemangiosarcoma. When the disease showed signs of progression, combination chemotherapy with cyclophosphamide and vincristine was initiated. Four months following presentation, a submandibular lymph node was removed and found to have metastatic hemangiosarcoma. From presentation to euthanasia, the patient survived 205 days.
Clinical Relevance: Hemangiosarcoma is a rare cancer in feline patients, with a lack of veterinary literature on its presentation and chemotherapy protocols. The subject of this case report had a novel presentation of hemangiosarcoma and responded favorably to a chemotherapy protocol not previously described for this disease.
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