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 an opening that is made in the colon with surgery. After the opening is made, the colon is brought to the surface of the abdomen to allow stools to leave from the body. The opening at the surface of the abdomen is called a stoma.