NOTE: The thicknesses for backing flanges noted in the tables are applicable to. steel. Different metals demand different thicknesses for the same performance, so for. metals other than steel, consideration must be given to thickness. Although Tables 4, 5, 6 and 7 in these guidelines make reference to pressure ratings.
Big difference : A subtotal colectomy is removing almost all the colon; usually just a couple of inches are left near the rectum. A partial colectomy is not done AFTER a subtotal colectomy because there is basically no colon left.
A colostomy is a surgery in which the colon (large intestine) is re-routed and attached to an opening in the abdomen and skin called a stoma. The colon, or large intestine, forms and eliminates stool through the rectum.