Fig. 1

The procedure of TPC-SIAA plus pedicled omental transposition. a Trocar placements of total laparoscopic TPC-SIAA plus pedicled omental transposition in a female patient. b We transanally stripped the rectal mucosa from the dentate line towards the proximal rectum (black dotted line). c We transanally dissociated the rectum to the abdomen-side without damaging the anal sphincter. d All rectal and colon specimens were removed through the anus. e Straight ileoanal anastomosis was performed through the anus; f Laparoscopic pelvic view after straight anastomosis. g The pedicled greater omentum was dissociated using a laparoscope. h The pedicled greater omentum was filled behind the newly constructed rectum. TPC-SIAA, total proctocolectomy with straight ileoanal anastomosis