Radiographic findings of hypertrophic osteodystrophy in a mongrel puppy

A three-month-old male native puppy with lameness, metaphyseal swelling, pain, depression,inappetence and variable pyrexia was diagnosed as having hypertrophic osteodystrophy (HOD) based onradiologic examination. The hemogram and biochemical profiles were within normal limits. Radiologicexamination revealed a radiolucent zone in the metaphyses and a radiopaque band near the physes of theappendicular long bones. Periosteal new bone formation was seen around of the distal metaphyses of theradii, ulnae and tibiae. Currently, there is no specific treatment for HOD. The condition of puppy wasimproved following restriction of activity, confinement to small well-padded area, administration of highquality diet and anti-inflammatory drug (aspirin, 10 mg/kg PO q12h for two weeks). To the best of ourknowledge, it is the first report of HOD in mongrel puppies in Iran.