http://www.ajronline.org/cgi/content/full/184/4/1143

Jinxing Yu ; Ann S. Fulcher ; Mary Ann Turner ; Robert A. Halvorsen

OBJECTIVE: The purpose of our pictorial essay is to highlight the helical CT features of uncommon mimics of appendicitis and to provide clues to differentiate them from appendicitis.

CONCLUSION: Uncommon mimics of appendicitis create a diagnostic challenge in patients with right lower quadrant pain. Recognition of the helical CT features of uncommon mimics of appendicitis is important in clinical management and avoiding unnecessary laparotomy.