History
A fifteen-year-old warmblood gelding was presented at the Faculty of
Veterinary Medicine of Ghent University with a prominent swelling at the
proximomedial aspect of the left metacarpal bones. According to the
owner, the swelling was initially small but had been growing over the
last seven years. Except for a short episode of lameness after striking
the mass during riding, there had not been any significant lameness
during these years. Prior to referral, a radiographic and
ultrasonographic examination was performed, but no biopsy of the mass
had been taken yet. The horse was not being ridden at the time of
presentation, because of a concurrent desmopathy of the lateral
suspensory branch at the right forelimb.