Radiographic assessment of congenital heart disease in calves using silhouette analysis.

Comparatively assessing the cardiac silhouettes of calves with suspected congenital heart disease against normal controls provides veterinarians with an additional and often superior method of radiographic diagnosis.     

Asceptic necrosis of bone in a dog

Necrosis of intramedullary bone and bone marrow elements is reported in the long bones of a dog. Radiographically lesions were evident as an irregular increase in intramedullary density. On gross postmortem examination necrotic tissue appeared as yellow-white deposits on the endosteal surface and in the medullary cavity. Microscopically, necrotic bone had empty lacunae and was often covered by basophilic, woven bone. The cause and pathogenesisof aseptic necrosis of bone are discussed.