Hey - I don't know about your type of sarcoma, but I feel like an expert on being a Frustrated Supporter... With my husband's sarcoma, he was told that if the cancer had metastasized to the lungs, then it would be a Stage 4 cancer, and chemotherapy would definitely be administered. That is where we are at now. He will start chemo in a couple of weeks. We have been very frustrated with getting answers from doctors as we've gone through this. Because this type of cancer is rare, many doctors are sure what treatment is protocol and what is new out there. We started with the Midwest Sarcoma Institute here in Kansas, with Dr. Howard Rosenthal. By all accounts, he is one of the leading experts in sarcoma in the nation. From there, we have worked with a general oncologist who is consulting with doctors and pathologists at M D Anderson in Houston. The problem has been in coordinating the transfer of information. I could go on and on about that. You should ask if the margins of the tumor they removed were clear. If so, that is a good sign. It seems strange that one doctor told you it was sarcoma and the other didn't. My husband's was diagnosed immediately after a biopsy. He had 28 rounds of radiation, followed by surgery, and now 8 months later is going to start chemotherapy. Let me know if you have more questions or if you just need to vent a bit.