Six Surgical Stages in the Resection of Primary Left Retroperitoneal Liposarcoma: A Standardized Comprehensive Approach.

backgroundSurgery at high-volume centers remains the cornerstone of retroperitoneal sarcoma (RPS) treatment, requiring en bloc resection of the tumor with adjacent organs when appropriate.

resultsThe patient underwent en bloc resection of the left retroperitoneal mass, including the ipsilateral kidney, adrenal gland, and colon. A healthy plane was identified between the tumor and the pancreatic tail. Given the patient's age, prior chemotherapy, and high-risk of pancreatic fistula, the distal pancreas and spleen were dissected free and preserved. On the posterior side, the psoas muscle was tightly adherent to the tumor and was resected to ensure oncological adequacy. This structured medial-to-lateral approach allows early vascular control and safe identification of critical structures.

conclusionsResecting a left RPS is a complex procedure that demands a diverse set of surgical skills. This six-stage approach, developed over two decades in a high-volume center, provides a reproducible and oncologically sound benchmark, applicable virtually in all cases while ensuring a resection adherent to the principles of surgical oncology.