Prospective Study Evaluating the Treatment Outcomes for Localised Recurrent, Resectable Retroperitoneal Liposarcoma

This study evaluates treatment outcomes for patients with relapsed retroperitoneal liposarcoma — a fatty tissue cancer in the back of the abdomen — that has come back after initial surgery and can be removed again. The study examines surgery combined with radiation therapy. **You may be eligible if...** - You are 18 or older with a confirmed first recurrence of well-differentiated or dedifferentiated liposarcoma in the retroperitoneal space (behind the abdomen) - Your original tumor was fully removed (R0 or R1 resection) and no distant spread has been found on recent scans - Your tumor can be surgically removed again - You have never received radiation to this area before - Your general health is sufficient for surgery and radiation **You may NOT be eligible if...** - Your disease cannot be fully removed or is likely to require incomplete resection - Your cancer has spread to distant organs - You are pregnant - You have another active cancer Talk to your doctor to see if this trial is right for you.