The terminal portion of the small intestine is called the ileum. It connects to the large intestine at the ileocecal valve.

neo terminal ileum refers to the 'new' terminal ileum, i.e the 'new' last part of the small bowel.

It would be referred to as neo or new because the original terminal ileum has previously been removed.

If you haven't had the last part of your small bowel removed you would just have a terminal ileum.

If you have had the last part of your small bowel removed, you will have a neo terminal ileum.

The Ileum

No change

Alternative names will be, proximal small bowel (duodenum) and distal or terminal small bowel (ileum)