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Extraskeletal osteosarcoma in the duodenum of a cat
E L Stimson1, W T Cook, M M Smith
1Department of Small Animal Clinical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA.
Journal of the American Animal Hospital Association
|July 29, 2000
Summary
A cat diagnosed with osteosarcoma in the duodenum experienced vomiting and weight loss. Despite surgical removal and no signs of metastasis, the cat unfortunately succumbed to the illness.
Area of Science:
- Veterinary Medicine
- Oncology
- Gastroenterology
Background:
- Osteosarcoma is a malignant bone tumor rarely found in extraskeletal sites.
- Intra-abdominal osteosarcoma is exceptionally rare in domestic animals.
Observation:
- A three-year-old domestic longhair cat presented with jaundice, vomiting, and anorexia.
- Abdominal ultrasound identified a duodenal mass obstructing the common bile duct.
Findings:
- Surgical resection and cholecystoduodenostomy were performed.
- Histopathology confirmed the duodenal mass as osteosarcoma.
- No evidence of metastasis was found on thoracic radiographs or bone scintigraphy.
Implications:
- This case highlights the possibility of extraskeletal osteosarcoma presenting within the gastrointestinal tract.
- Early diagnosis and surgical intervention are crucial but may not always prevent adverse outcomes in rare presentations of osteosarcoma.