EXCISION OF GIANT PELVIC LIPOSARCOMA NECESSITATING FEMORAL-FEMORAL ARTERY BYPASS AND GAUZE PACKING FOR ILIAC ARTERY INVOLVEMENT AND MASSIVE PRE-SACRAL BLEEDING-A CASE REPORT.

The patient is a 43-year-old male, presented with numbness of the left lower extremities. Imaging studies showed a pelvic tumor 20 cm in diameter, involving the left ureter, left common iliac vessels, left internal and external iliac vessels, and inferior mesenteric artery, which was deemed unresectable. Tumor biopsy confirmed liposarcoma. As chemotherapy was not effective, he was referred to us. Following femoral-femoral artery bypass in advance, the tumor was resected with the sigmoid colon, left kidney, ureter, left iliac vessels, and interior mesenteric artery. Removal of the tumor caused massive venous hemorrhage from the pre-sacral plexus, which was scarcely managed by gauze packing. Open abdominal management was selected to avoid abdominal compartment syndrome by severe intestinal edema. The packed gauze was retrieved on the fourth post-operative day, with laparotomy closed. The postoperative course was uneventful.