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Table 2 Surgical findings in 94 patients with pelvic endometriosis. Sensitivity, specificity, PPV, NPV, and accuracy for TVUS findings and agreement with endometriosis findings at laparoscopy

From: Applying a statistical method in transvaginal ultrasound training: lessons from the learning curve cumulative summation test (LC-CUSUM) for endometriosis mapping

Disease location Cases (n = 94) Sensitivity (%) Specificity (%) PPV (%) NPV (%) Accuracy (%)
Endometriomas 57 (60.6%) 100 100 100 100 100
Bladder nodules 11 (11.7%) 90.9 100 100 98.8 98.9
Vaginal nodules 39 (41.5%) 92.3 98.2 97.3 94.7 95.7
Pouch of Douglas obliteration 48 (51.1%) 93.8 91.3 91.8 93.3 92.5
Bowel lesions (rectum, sigma, POD) 20 (21.3%) 80 98.6 94.1 94.8 94.7
Uterosacral ligaments 50 (53.2%) 60 70.5 69.8 60.8 64.9
  1. PPV positive predictive value, NPV negative predictive value, TVUS transvaginal ultrasound