What surgical procedure involves the removal of the colon, rectum, and anus?

The procedure that involves the removal of the colon, rectum, and anus is known as a continent ileostomy. In this surgical procedure, the patient's colon and rectum are removed, and an internal pouch is created using the remaining small intestine. This pouch serves as a reservoir to collect stool, allowing for a more controlled elimination process. It is often constructed in such a way that the patient can empty it at will, thereby avoiding the need for an external bag.

In contrast, a Kock pouch is a specific type of continent ileostomy but does not encompass the full removal of all aspects mentioned above. A colostomy generally involves creating an opening for the colon to divert waste outside the body but does not require the removal of the rectum and anus. The term ostomy is broader and includes various types of surgical openings but does not specifically refer to the removal of the entire colon, rectum, and anus. Such clarity in definitions allows for accurate identification and understanding of surgical terms related to gastrointestinal procedures.