Extraskeletal osteosarcoma in the duodenum of a cat.
A three-year-old, male neutered domestic longhair cat was referred for evaluation of icterus, vomiting, and anorexia. Abdominal ultrasonography revealed a proximal duodenal mass obstructing the common bile duct. The mass was surgically resected, and a cholecystoduodenostomy was performed. The histopathological diagnosis was osteosarcoma. Thoracic radiographs showed no evidence of metastasis, and bone scintigraphy revealed no signs of a primary skeletal osteosarcoma. Four months after surgery, the cat had intermittent vomiting, marked weight loss, and died.
Department of Small Animal Clinical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA.
E L
EL
Stimson
W T
WT
Cook
M M
MM
Smith
S D
SD
Forrester
M L
ML
Moon
G K
GK
Saunders
D000818:Animals; D002371:Cat Diseases / Q000175:diagnosis / Q000601:surgery*; D002415:Cats; D002768:Choledochostomy / Q000662:veterinary*; D004379:Duodenal Neoplasms / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*; D017809:Fatal Outcome; D008297:Male; D012516:Osteosarcoma / Q000175:diagnosis / Q000601:surgery / Q000662:veterinary*