Ileal Pouch Types
Ileal pouch reconstruction surgery performed by UW Health surgeons patients with conditions such as ulcerative colitis, familial polyposis and certain types of colon cancer to avoid living with a permanent ileostomy and external appliance after colectomy.
The J-, S-, and W-reservoirs are the most common types of pouches used in ileal pouch reconstruction. The number of limbs and the amount of small bowel used to create them distinguishes the various types of pouches and reconstruction procedures.
J Pouch: The J-reservoir is made from two side-by-side limbs stapled together to create a J-loop.
S Pouch: An S-reservoir has three limbs and a short nipple that serves as the ileal reservoir's outlet.
W Pouch: The W-pouch has four limbs and looks like two J-loops placed side by side.
Function, capacity and elasticity vary with design. During surgery we determine which type of reservoir will work best. Most of our patients receive an S- or W-reservoir; however, selection of pouch design depends on a variety of factors, including age, patient size and individual anatomy.