Evaluation of the ability of laboratory, ultrasonography, and Doppler ultrasonography findings to distinguish between simple and complicated appendicitis.

Doppler ultrasonographic examination did not significantly differentiate complicated from simple appendicitis. The CRP value is an independent risk factor in the diagnosis of complicated appendicitis, and the presence of a significant increase in mesenteric tissue thickness is one of the important criteria for differentiating complicated appendicitis from simple appendicitis.