Diagnostic efficacy of sonography for diagnosis of ovarian torsion

ABSTRACT

The aim was to determine the diagnostic accuracy of sonography for ovarian torsion. In this analytic descriptive study, 323 women with suspected ovarian torsion underwent a transabdominal sonography. Findings of sonography were compared with laparatomy. The ultrasound correctly diagnosed 72.1% of ovarian torsion cases and missed 27.9% of these cases [false negatives]. There was a strong correlation between sonography and surgery with a kappa value of 84.0%. The sensitivity and specificity of sonography for diagnosing ovarian torsion were determined 72.1% and 99.6%, respectively. Also, sonography had a positive predictive value [PPV] of 96.9%, a negative predictive value [NPV] of 95.9%, and a total accuracy of 96.0% for detection of ovarian torsion. Sonography is excellent to evaluate patients with suspected ovarian torsion. Abnormal blood flow is highly predictive of ovarian torsion