In STEP, the bowel is dilated and then partially transected (cut) at certain points, creating a zigzag pattern to the bowel that results in lengthening of the surface area available for digestion. Longitudinal intestinal lengthening and tapering (LILT), also known as the Bianchi procedure, is a surgical alternative to STEP. LILT and STEP have similar outcomes. With each procedure, more than half of patients gain the ability to absorb sufficient nutrients in the intestine. A single-center study compared STEP and LILT, reporting fewer complications with LILT.
Serial transverse enteroplasty
Longitudinal intestinal lengthening and tailoring
Partial ileal bypass surgery
Ileojejunal bypass
Ileal conduit urinary diversion
Jejunoileal bypass
Intestinal bypass
Ileal interposition