Identification of a New Blood Biomarker for the Diagnosis and Prognosis of Liposarcomas

This study is looking for a new blood test (biomarker) that could help doctors diagnose and monitor a rare type of cancer called liposarcoma (a cancer of fat tissue). Researchers will compare blood samples from liposarcoma patients to healthy volunteers. **You may be eligible if...** - You are 18 or older - You are having surgery for a liposarcoma (a fat-tissue cancer), including cases that have come back or spread, OR - You are a healthy person willing to donate a blood sample for comparison purposes - You are able to provide informed consent **You may NOT be eligible if...** - You have received chemotherapy or radiation before surgery for this cancer - You are pregnant or breastfeeding - You have had another cancer within the last 5 years (except certain skin cancers) - You have psychiatric conditions that prevent you from giving valid consent - You are unable to attend follow-up visits Talk to your doctor to see if this trial is right for you.