Fig. 1From: Unusual cause of urinary retention in a child: inflammatory pseudotumor of the urinary bladderTransverse grayscale ultrasound (a) and color Doppler (b) image through the pelvis show well-marginated hypoechoic mass lesion (arrow in a and b) arising from the bladder neck projecting into the bladder lumen. The lesion shows mild vascularityBack to article page