Ulcerative colitis and familial adenomatous polyposis are the two main health conditions that lead to removal of the entire colon ( large intestine ) and rectum , which leads to the need for an ileostomy .
Head entity: rectum Q158716 25
Tail entity: large intestine Q11083 21 22
Relation (head \u2192 tail): P527
Inverse relation (tail \u2192 head): P361