Outer diameter of the vermiform appendix: not a valid sonographic criterion for acute appendicitis in patients with cystic fibrosis.

Menten, Renaud; Lebecque, Patrick; Saint-Martin, Christine; Clapuyt, Philippe · AJR Am J Roentgenol · 2005

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Abstract

We sought to investigate whether the outer diameter of the vermiform appendix on cross-sectional sonography is as reliable a criterion with which to confirm acute appendicitis in patients with cystic fibrosis as in those without cystic fibrosis. The outer appendiceal diameter of 6 mm or more cannot be considered a reliable criterion for the diagnosis of acute appendicitis in patients with cystic fibrosis.

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