Superior mesenteric vein thrombosis (SMVT) is a rare complication of acute appendicitis. It has no specific clinic manifestation. Anticoagulation, antibiotics and surgery are the main treatment pillars. We report herein a case of an 86-years-old women treated for acute appendicitis complicated with SMVT and massive pulmonary embolism.

A 68-year-old female was operated for a giant dedifferentiated retroperitoneal liposarcoma (RLS) encasing entirely the right kidney. She had an en-bloc resection of the tumor with right nephrectomy. The en-bloc resection should avoid R1 resection margins. Renal conservation is suggested if the kidney is widely displaced and for elderly patient.