This week’s case is a 7 month old female neutered St. Bernard. 6 weeks previously had swelling, pyrexia, and lameness of the right pelvic limb. What are your differential diagnoses?
Teaching and learning about veterinary diagnostic imaging.
This week’s case is a 7 month old female neutered St. Bernard. 6 weeks previously had swelling, pyrexia, and lameness of the right pelvic limb. What are your differential diagnoses?
There is marked muscle atrophy of the right pelvic limb, and the right femur has thin cortices. There is subluxation of the right coxofemoral joint with multifocal lysis of the acetabulum and femoral head. The femoral head is thin, and there is surrounding periosteal reaction. The left coxofemoral joint appears normal.
Aggressive bone lesion of the left coxofemoral joint with secondary muscle atrophy and cortical thinning from decreased weight bearing. Differential diagnoses include infectious or noninfectious arthritis, or less likely neoplasia.
A femoral head and neck ostectomy was performed. On histopathology, severe degenerative change was found without evidence of infection.
Charlierak says
Hello Dr. Z! Thanks in advance! I have a question, what’s the final diagnosis of this condition? It doesn’t seem like hip dysplasia, fungal infection, LCPD, or neoplasia based on the presented clinical signs. Autoimmune disease or genetic problem?
Allison Zwingenberger says
Just click on the “show diagnosis” button to see the histopathology results.