Intra-abdominal cysts detected at prenatal ultrasound screening.

This report describes the ultrasonographic findings in 2 fetuses with intra-abdominal tumours. Both were detected in the 32nd week of gestation and could be visualized throughout the pregnancy. Postnatally, the findings were verified at repeated examinations of the infants, and successful operations undertaken at 4 and 8 months of age, respectively. The tumours represented cysts, probably derived from bleeding in diffuse haemangiomas.