Canine diffuse idiopathic skeletal hyperostosis.
The radiographic and necropsy findings in a case of canine diffuse idiopathic skeletal hyperostosis are reported. Radiographically, the disease was characterized by progressive development of para-articular mineral densities along joint surfaces of the appendicular skeleton; progressive osseous fusion of the ilium, pubis, femur, and ischium; and progressive flowing ossification of the dorsal spinous processes of cervical and thoracic vertebrae. The para-articular lesions were considered to develop as a consequence of fibrocartilaginous proliferation followed by endochondral ossification. Progression of the ossification process led to para-articular joint fusion and almost complete ossification of the metaplastic cartilage. A distinguishing feature was the sparing of intra-articular structures.
D000818:Animals; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D004283:Dog Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D004285:Dogs; D004550:Elbow / Q000000981:diagnostic imaging; D006621:Hip Joint / Q000000981:diagnostic imaging; D004057:Hyperostosis, Diffuse Idiopathic Skeletal / Q000000981:diagnostic imaging / Q000473:pathology / Q000662:veterinary*; D007596:Joints / Q000473:pathology; D008297:Male; D011859:Radiography; D013128:Spinal Osteophytosis / Q000662:veterinary*; D013131:Spine / Q000473:pathology