Vet Comp Orthop Traumatol 2012; 25(05): 418-420
DOI: 10.3415/VCOT-11-10-0143
Case Report
Schattauer GmbH

Late-onset fracture-associated osteosarcoma in a cat

B. Sonnenschein
1  Small Animal Hospital, Stommeln, Germany
M. J. Dickomeit
1  Small Animal Hospital, Stommeln, Germany
M. S. Bali
1  Small Animal Hospital, Stommeln, Germany
› Author Affiliations
Further Information

Publication History

Received 14 October 2011

Accepted 02 April 2012

Publication Date:
18 December 2017 (online)


An 18-year-old male, castrated Domestic Shorthaired cat was presented with the complaint of acute severe lameness of the left pelvic limb. There was no history of trauma, apart from a distal physeal left femoral fracture that had been repaired 17 years previously. Radiology revealed a displaced distal metaphyseal femoral fracture with marked areas of bone lysis and periosteal proliferations. A pathological fracture due to a bone neoplasia was suspected. An amputation with coxofemoral disarticulation was performed. Histopathology confirmed the tentative diagnosis of appendicular osteosarcoma. No postoperative complications were encountered and the cat made a full recovery. This case shows an unusual presentation of a late-onset fracture-associated feline osteosarcoma.