Same image as in Figure 1. A large, well-defined, lobular, and smoothly marginated soft tissue opaque mass (arrowheads) is centered on the tarsocrural joint. There is moderate continuous, relatively well-defined, smooth, and solid periosteal proliferation along the distal third of the tibia and the fibula, which coalesces with marked interrupted, irregular, ill-defined, and spicular periosteal proliferation along the medial aspects of the tibial diaphyseal and metaphyseal regions, also seen to a lesser extent along the distolateral aspect of the calcaneus. The proximal extent of the periosteal proliferation along the tibia and the fibula has a narrowing triangular contour (arrows). Multifocally along the cortical margins of the distal tibia and fibula, the talus, and the calcaneus, there are multiple, well-defined, smoothly marginated, and rounded to oval concave regions of lysis with variable involvement of the underlying cancellous bone. Dorsal and medial to the talus, there is a small, ovoid, ill-defined, irregularly marginated, and heterogeneously mineral opaque body (asterisk).
Citation: Journal of the American Veterinary Medical Association 259, S1; 10.2460/javma.21.01.0031