Yes. Left untreated, sarcomas eventually result in death. The length of time before death occurs depends upon the type of sarcoma, how rapidly it is progressing, the location of the sarcoma, the overall health of the patient, etc.
Yes. Please make sure that you have your sarcomapathology checked by an expert. I am an MD Anderson trained pathologist with expertise in sarcoma. Please contact if you a free opinion on your diagnosis email@example.com.