Twenty-one patients with a clinical diagnosis of acute appendicitis underwent graded compression ultrasonography as an ongoing clinical study. The findings at surgery were compared with the ultrasonographic findings. There were no false-positive, 8 false-negative, 9 true-positive, and 11 true-negative results. The specificity was 100% and sensitivity, 52.9% The findings of this study, in contrast to findings of other recently reported studies, demonstrates that ultrasonography is a poor modality with which to evaluate acute appendicitis.

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				T. Terasawa, C. C. Blackmore, S. Bent, and R. J. Kohlwes Systematic Review: Computed Tomography and Ultrasonography To Detect Acute Appendicitis in Adults and Adolescents Ann Intern Med, October 5, 2004; 141(7): 537 - 546. [Abstract] [Full Text] [PDF]