Fig. 1.

Transabdominal ultrasound scan of twin 2's morbidly adherent placenta. There is marked thinning of the myometrium anteriorly, with no appreciable myometrial tissue between the placenta and the bladder serosa. Several irregular sonolucent spaces are present, likely representing placental lacunae. Color Doppler demonstrates evidence of neovascularity, especially along the disrupted bladder line.