In my Rottweiler, I first noticed that she was limping. The limping became worse and a large lump appeared on the leg. This large lump was the tumor that was growing inside the leg bone. I had to stop all obedience work with her because tumorous bone is not as strong as normal bone and can break easily. Such a fracture won't heal readily.
I took Zoe in to the vet and a radiograph revealed the presence of osteosarcoma. There are several characteristics that can be observed on the radiograph:
- The “lytic lesion” – looks like an area of bone has been eaten away.
- The “sunburst” pattern – shows as a corona effect as the tumor grows outward and pushes the more normal outer bone up and away.
- A pathologic fracture may be seen through the abnormal bone.
I hope that Cayenne will continue to enjoy life as much as possible. She has been given around 4 months. She doesn't go to the beach anymore but seems happy enough limping around the house. It's sad to see such a once active dog no longer able to do the things that she so enjoyed. Osteosarcoma is a bad disease and one that I had hoped to not see among my doggy friends again.