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 colon resection (also known as a colectomy) is an inpatient procedure in which the cancerous portion of the colon is removed. To ensure all of the cancerous tissue is removed, a small portion of healthy colon tissue adjacent to the cancerous tissue may also be removed. On average, one-fourth to one-third of the colon may be removed during a colectomy. The remaining portions of the colon are then connected.