The identifiable landmarks in the cecum are the appendiceal orifice—which is a curvilinear indent indicating the location of the appendix from the lumen of the bowel, and the ileocecal valve, which appears as a puckering in the most distal fold of the cecum.

Is appendiceal orifice normal?

Appendiceal Orifice, Large

These represent lymphoid hyperplasia, common in the terminal ileum and cecum, and are considered a normal variant.

What does a normal appendiceal orifice look like?

The appendiceal orifice is usually an unimpressive slit, often crescentic in shape. The ileocecal valve is made up of the superior and inferior lips (usually not seen en face) and is the gateway leading into the terminal ileum.