Fig. 2From: Applying a statistical method in transvaginal ultrasound training: lessons from the learning curve cumulative summation test (LC-CUSUM) for endometriosis mappingMultiplanar 3D image of TVUS of bladder detrusor endometriosis penetrating from the anterior uterine wall. See hourglass appearance of nodule penetration (arrow). The uterus is affected by adenomyosisBack to article page