A Case of Retroperitoneal Metastatic Liposarcoma after Laparoscopic Resection

Abstract

A 67-year-old man was referred to our hospital because of a growing left femoral mass. We diagnosed him with mucinous liposarcoma in the left femoral biceps fascia and performed enlarged tumorectomy with free surgical margin. Four months postoperatively, an abdominal enhanced computed tomography revealed an abnormal tumor in the retroperitoneum. The tumor located in front of the sacrum with clear boundaries and mild contrast effect (CT value: -10-66) was diagnosed as retroperitoneal metastatic liposarcoma ; thus, laparoscopic retroperitoneal tumorectomy was performed. By mobilizing the sigmoid and rectosigmoid colon, the tumor was identified and resected with enough margin and no tissue damage. Histologically, the tumor with myxomatous changes was consistent the finding of metastatic left femoral liposarcoma. The patient has been free from recurrence and metastasis one year after the second operation. The significance of close observation postoperatively and the usefulness of laparoscopic surgery for intraperitoneal recurrence cases were suggested.