This is a video clip demonstrating an IUP at 15-16 weeks. There is a massive cystic hygroma with associated pleural effusion and a small omphalocele. There is a possible a cardiac defect..

These are the ultrasound images demonstrating the same.

The parents elected to terminate the pregnancy and the cystic hygroma was confirmed at autopsy. No karyotype was perfomed on this 48 gm fetus.

This is the video clip of another fetus showing the same anomaly.