i just posted in another topic of yours, but we were told probably chondrosarcoma and it turned out to be osteosarcoma. The x-ray showed the tumor originating in the ulna...osteosarcoma in the forelimb is almost always in the radius.  The x-ray showed the tumor to be affecting the neighboring bone...osteosarcoma will never jump to a neighboring bone.  The tumor was partially hard and partially squishy...can't explain that one   Everything was pointing to chondrosarcoma, so imagine our surprise when the pathology report came back confirming a high-grad highly-active osteosarcoma tumor.  We were shocked and I was sure this meant imminent death for my snuggle bear.  But here we are over a year later, he's not showing any signs of slowing down yet, and I'm thinking of removing another leg to make him stop jumping up walls and on people.  The diagnosis isn't important, but rather the fact that our dogs are given the best life we are able to provide for them.  As long as they get their food, their love, and their treats, they don't care whether they have chondrosarcoma, osteosarcoma, hemangiosarcoma, blah-ba-dee-blahsarcoma, or any other other disease with the combination of sarc and oma in the name.  You're in the hardest part right now...the waiting.  It sucks.  It WILL get easier though, so keep your chin up

<3 Laura and Jackers