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Gastric leiomyosarcoma in a horse.
1Department of Clinical Studies, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Kennett Square 19348.
Summary
A 12-year-old Thoroughbred gelding was diagnosed with gastric leiomyosarcoma, a rare tumor. Extensive diagnostics failed to identify the cause of anorexia and weight loss before surgery confirmed the mass.
Area of Science:
- Veterinary Oncology
- Equine Medicine
- Surgical Pathology
Background:
- Gastric leiomyosarcomas are rare tumors in horses.
- Clinical signs can be non-specific, including anorexia and weight loss.
- Diagnostic challenges exist for equine intra-abdominal masses.
Observation:
- A 12-year-old Thoroughbred gelding presented with anorexia, weight loss, and intermittent fever.
- Noninvasive diagnostic methods were insufficient for a definitive diagnosis.
- Exploratory celiotomy revealed an intra-abdominal mass.
Findings:
- A large, firm mass was identified involving the distal esophagus, stomach, and liver.
- Histopathologic examination confirmed the diagnosis of leiomyosarcoma.
- The tumor's extensive involvement complicated diagnosis and treatment options.
Implications:
- This case highlights the diagnostic difficulties of gastric leiomyosarcoma in horses.
- Early detection and surgical intervention are crucial but often challenging.
- Further research into equine gastrointestinal tumors is warranted.