Small Animal Radiology and Ultrasound: A Diagnostic Atlas and Text

Chapter Four The Appendicular Skeleton 585
A
Fig. 4-137 A 4-year-old female domestic short-haired cat with swelling of the right carpus, which
had been present for 3 months. Mild swelling was identified also in the left carpus. Other joints
appeared normal. Radiographs of both carpi were obtained. A, There is soft-tissue swelling in the
right carpus. Extensive bony destruction is visible, involving the distal radius and ulna and carpal
bones as well as the proximal metacarpal bones. B, There is minor soft-tissue swelling of the left carpus.
Extensive demineralization is seen in the distal radius, ulna, carpal bones, and proximal
metacarpal bones. Diagnosis: Feline progressive polyarthritis.
B
Fig. 4-138 A 2-year-old female Persian cat with a
fever and joint swellings. There is soft-tissue swelling
of the right tarsus. Bony proliferation involving the
distal tibia, calcaneus, tarsal bones, and proximal
metatarsal bones is shown. There is a loss of bone density
in the tarsal bones. Diagnosis: Feline progressive
polyarthritis.