Today’s case is a 4-year-old female neutered Mastiff with a 3-week history of a growing mass and lameness. Take a look at the case, and post your comments below.
There is a soft tissue mass in the caudal aspect of the right pelvic limb along the right femur. There is a mild periosteal reaction of the caudal cortex of the right femur. The mass extends from the coxofemoral joint to the proximal aspect of the tibia.
There are osteophytes on the patella, femoral condyles, and tibial plateau. There is also soft tissue opacity within the stifle joint.
- soft tissue sarcoma
- abscess/granuloma stifle joint osteoarthrosis is unlikely related to the mass
The periosteal reaction suggest that the soft tissue lesion is causing local reaction or invasion into the femur.