An appendicolith is a calcified deposit located within the appendix.
Occasionally an appendicolith is visible on an abdominal X-ray, but often has similar appearances to calcified mesenteric lymph nodes.
Although appendicoliths are associated with appendicitis, the finding of an appendicolith on an abdominal X-ray is not in itself sufficient to diagnose appendicitis.
X-rays should not be performed routinely to look for an appendicolith.