Diagnostic Performance of Ultrasound in Adult Appendicitis. A Retrospective Review of 331 Cases

Ultrasound demonstrated modest sensitivity but high specificity for diagnosing appendicitis in adults, consistent with international data when inconclusive cases are included. This shows that in the absence of any ultrasound features, appendicitis is unlikely. Alternative findings were twice as common as appendicitis, highlighting the value of ultrasound as a primary imaging modality for the assessment of patients with right lower quadrant pain.