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Hemangiosarcoma in the cat: retrospective evaluation of 31 surgical cases
Insights
This study investigated feline hemangiosarcoma, a cancer affecting cats. Abdominal hemangiosarcoma showed a high rate of metastasis, while subcutaneous tumors frequently recurred locally.
Area of Science:
- Veterinary Oncology
- Feline Medicine
- Cancer Biology
Background:
- Hemangiosarcoma is an aggressive cancer in cats.
- Understanding tumor location and behavior is crucial for feline cancer treatment.
Purpose of the Study:
- To characterize hemangiosarcoma in cats based on primary tumor location.
- To evaluate metastasis and recurrence rates in feline hemangiosarcoma.
Main Methods:
- Retrospective case series of 31 cats diagnosed with hemangiosarcoma.
- Diagnosis confirmed via surgical biopsy.
- Tumor locations and evidence of metastasis/recurrence were recorded.
Main Results:
- Primary tumor sites included abdominal (15), subcutaneous (13), thoracic (2), and nasal (1) cavities.
- 60% of abdominal hemangiosarcomas showed extrathoracic metastasis.
- 60% of subcutaneous hemangiosarcomas had local recurrence.
- Median survival times varied by location, with abdominal and subcutaneous sites having shorter survival.
Conclusions:
- Abdominal hemangiosarcoma in cats is associated with a high risk of metastasis.
- Subcutaneous hemangiosarcoma in cats has a significant rate of local recurrence.
- Tumor location is a critical factor influencing prognosis in feline hemangiosarcoma.
Abstract:
Hemangiosarcoma was diagnosed in 31 cats. Diagnosis was confirmed by surgical biopsy. Locations of the primary tumors were the abdominal cavity (15 cats), sc tissue (13 cats), thoracic cavity (2 cats), and nasal cavity (1 cat). Nine (60%) of the 15 cats with abdominal hemangiosarcoma had extrathoracic evidence of metastasis: this was not found in the other cats. Of the cats with tumors located in the sc tissue, 6 of 10 (60%) evaluated on a long-term basis had local recurrence of the tumor. Eleven cats were not available for follow-up evaluation, 3 cats were euthanatized at the time of surgery, and 2 others were euthanatized within the first postoperative week subsequent to histologic diagnosis of hemangiosarcoma. Of the remaining 15 cats, 4 with abdominal hemangiosarcoma and 5 with hemangiosarcoma of the sc tissue died at means of 22 and 44 weeks, respectively.