Chondroblastoma in the carpus of a cat

A nine-year-old Siamese cat was presented with moderate lameness and a swelling over the left carpus. Histologic evaluation of a biopsy of the mass was consistent with a diagnosis of chondroblastoma. There was no evidence of metastatic disease or any other bony lesions on radiography. Forelimb amputation was successfully performed and the cat was in complete remission 20 months later.