Amebic colitis on barium enema

A barium enema (A) shows a cone-shaped spastic cecum (between arrows), a deep ulcer (arrowhead) with surrounding halo of edema, and an incompetent ileocecal valve allowing for opacification of a normal appearing terminal ileum (asterisks). Image B shows a punctate ulcer (arrowhead) with surrounding halo of edema, spasm and narrowing of the proximal transverse colon (asterisk), and thumb printing (arrows) indicating submucosal edema. Image C shows spiculation (arrows) indicating fine ulceration of the mucosa.