The doctor called me this morning with the biopsy results. Sebastian’s tumor was a malignant, locally invasive osteochondrosarcoma. That means it was a mix of bone tumor (osteo) and cartilage tumor (chondro). He said the malignancy level was low and it does not appear to have spread, though of course there are no guarantees. His lungs, liver, and other bloodwork were checked 3 days before the amputation and there were no signs of cancer. It also sounds like osteosarcomas do not spread in cats the way they do in dogs.
The doctor is happy with that. I’m happy with that. Of course I would have been happier with “it’s benign!” but everyone was pretty convinced it was malignant from day 1.
This also tells us that this is NOT a Vaccine Associated Sarcoma. Hearing that makes me feel better because while I’m still sad that Sebastian didn’t do anything to deserve this, at least it wasn’t anyone else’s fault either. It happens. We deal with it.
So I’ll take it!! We will hope that Sebastian lives a long, healthy, happy, cancer-free life and be super, super cautious of his health. I’ll probably call the vet if he so much as sneezes.
P.S. Sebastian is back to eating like normal. And he wants to play a lot. I ordered him a Kong Kickeroo and it should get here tomorrow. I think that will be a more appropriate toy until he can do some serious running around.