[A Case Report of Robotic Assisted Laparoscopic Low Anterior Resection in a Patient with Rectal Cancer and Polysplenia Syndrome].

Polysplenia syndrome is a rare congenital disease characterized by variable thoracic and abdominal anomalies. A man in his 70s was diagnosed with rectal cancer by close exploration for fecal occult blood. A barium enema revealed a type 1 rectal tumor andwith non-rotation of intestine. CT revealed multiple abnormalities: a polyspleen, preduodenal portal vein, congenital absence of the pancreatic tail, bilateral superior vena cava, andbilateral bilobedlung. Basedon these findings, the patient was diagnosedas having rectal cancer with polysplenia syndrome andtreatedwith robotic assistedlaparoscopic low anterior resection. At operation, the whole colon was located in the left side of the abdominal cavity. The whole colon adhered with each other. The ileocecum adheredto the front of the aorta andthe right iliac artery. In the pelvis, anatomical abnormality was not detectedandrectal mobilization andresection was performedas usual. The patient hadno signs of recurrence of the rectal cancer. This is the first case presentation of laparoscopic low anterior resection in a patient with rectal cancer and polysplenia syndrome.