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Vulvar lipoleiomyoma in a dog
1Tifton Diagnostic and Investigational Laboratory, The University of Georgia, Tifton, GA 31793, USA.
Summary
This study reports the first case of a canine vulvar lipoleiomyoma, a rare tumor in a Siberian Husky. The lipoleiomyoma contained mature fat and smooth muscle cells, confirmed by immunohistochemistry.
Area of Science:
- Veterinary Pathology
- Canine Oncology
- Surgical Pathology
Background:
- Vulvar neoplasms in dogs can present diagnostic challenges.
- Lipoleiomyomas are rare tumors composed of adipose and smooth muscle tissue.
Observation:
- A 5-year-old female Siberian Husky presented with a vulvar neoplasm.
- Gross examination revealed a firm, white mass measuring 6 x 4 x 3 cm.
- Histopathology showed a nonencapsulated tumor with mature adipocytes and smooth muscle cells.
Findings:
- Immunohistochemistry confirmed neoplastic cells positive for alpha-smooth muscle actin and desmin.
- Absence of cytokeratin and vimentin immunoreactivity supported the diagnosis.
- The diagnosis of lipoleiomyoma was established based on combined findings.
Implications:
- This case represents the first documented instance of a canine vulvar lipoleiomyoma.
- Highlights the importance of comprehensive histopathological and immunohistochemical evaluation for accurate diagnosis of canine vulvar tumors.
- Contributes to the understanding of rare soft tissue tumors in veterinary oncology.
