Figure 1
From: Elemental, fatty acid, and protein composition of appendicoliths

Appearance and elemental composition of appendicoliths (a) Intra-operative photo of appendicolith eroding through wall of the appendix (Source: author photo). (b) Computerized tomography scan of the abdomen showing an appendicolith in the right lower quadrant of the abdomen (Source: author photo). (c) Most common elements found in appendicoliths. (d) Ten most common trace elements found in appendicoliths.