What is the term used to refer to a surgical opening created during certain procedures?

The term "ostomy" specifically refers to a surgical opening created during certain procedures to allow for the diversion of bodily fluids or waste. This could be an opening for the gastrointestinal or urinary tracts, such as a colostomy or ileostomy. The creation of an ostomy is intended to provide a new pathway for waste elimination when the normal route is not functional or has been surgically altered.

In contrast, an incision is a cut made during surgery to access internal structures. An excision involves the removal of tissue or an organ, which is not the same as creating an opening for waste diversion. A lesion typically refers to a region in an organ or tissue that has suffered damage due to injury or disease and is not synonymous with a surgical procedure or opening. Thus, "ostomy" is the correct term when discussing a surgical opening designed for specific therapeutic purposes.