Osteosarcoma (OSA), the most common bone cancer, represents about 85 percent of bone tumors in dogs.
These aggressive tumors spread rapidly and once diagnosed, should be taken very seriously.
“OSA commonly affects the limbs of large or giant breed dogs, but can also occur in other parts of the skeleton, such as the skull, ribs, vertebrae and pelvis,” said Dr. Rita Ho, veterinary intern instructor at the Texas A&M College of Veterinary Medicine and Biomedical Sciences.
Animals with limb osteosarcoma typically show signs of swelling at the affected side and associated lameness, depending upon the animal’s unique condition and tumor location.
The tumors typically form at or near growth plates, and occasionally, the animal will exhibit a growth on their body, or painful inflammation near the site of the tumor. If swelling does exist, it is likely due to extension of the tumor into the surrounding tissues.