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  • Title: The current utility of ultrasound in the diagnosis of acute appendicitis.
    Author: Lourenco P, Brown J, Leipsic J, Hague C.
    Journal: Clin Imaging; 2016; 40(5):944-8. PubMed ID: 27203288.
    Abstract:
    The purpose of this study is to evaluate the current performance of ultrasound in the diagnosis of acute appendicitis. Retrospectively, patients who presented to a single institution between 2011 and 2012 were included. Diagnostic accuracy was calculated, with surgery considered gold-standard. Our data demonstrates that US relative to surgery-confirmed appendicitis has a sensitivity and specificity of 48.4% and 97.9%, respectively. The diagnostic accuracy was further increased when there was a low pre-test probability, with a NPV of up to 96.6%. Ultrasound has a strong PPV in the diagnosis of acute appendicitis, and in equivocal cases, the NPV is reliable.
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