Helical CT Evaluation of Acute Right Lower Quadrant Pain: Part I, Common Mimics of Appendicitis

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

Disclosures

Am J Roentgenol. 2005;184(4):1136-1142. 

In This Article

Right-Sided Diverticulitis

Right colonic diverticulitis may be mistaken clinically for acute appendicitis. The helical CT findings usually consist of asymmetric thickening of the cecal wall, pericolonic inflammation, and the presence of diverticula[6] (Figs. 10A, and 10B). Identifying pericolonic inflammation centered above the ileocecal valve or adjacent to a diverticulum is helpful in differentiating diverticulitis from appendicitis.

42-year-old man with right-sided diverticulitis. A , Axial CT scan shows multiple diverticula ( arrowheads ) of right colon (C) with pericolonic fat stranding ( arrows ). B , Axial CT scan obtained superior to A shows inflamed diverticulum ( arrowhead ) in medial aspect of right colon (C) with extensive pericolonic fat stranding ( arrows ).

42-year-old man with right-sided diverticulitis. A , Axial CT scan shows multiple diverticula ( arrowheads ) of right colon (C) with pericolonic fat stranding ( arrows ). B , Axial CT scan obtained superior to A shows inflamed diverticulum ( arrowhead ) in medial aspect of right colon (C) with extensive pericolonic fat stranding ( arrows ).

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