Ultrasonic features in B-mode and color Doppler. A heterogeneous solid mass located in the right quadrant of the fetal abdominal cavity, with close relationship to the liver. The lesion seemed to have ill-defined margin, irregular shape, partial capsule and multiple cystic cavities inside (hollow arrow). The mass appeared to be highly vascularized (solid arrow). (s: spine, L: liver, Left: the left side; Right: the right side).