The patient is scanned at 22 weeks and the examination is unremarkable except for the following images of the lower leg. The other leg and both feet present the same edema around the calves and feet.

In the chest there was a small amount of pleural effusion (note that this is pleural and not pericardial fluid since it infiltrates between the lung and the thorax and not all around the heart).

The abdomen demonstrated a thin layer of ascites.

At 31 weeks, the edema became visible around the forearm and hand.

Findings

Thus the findings included: 

• distal edema
• pleural effusion 
• ascites

This is the foot and leg of the child 

And the arm:

And the X-rays demonstrating subcutaneous edema:

At 3 months ultrasound demonstrated also the edema of the foot

In this case, making the correct observations was a little difficult, but once they were made, as many discovered, the only diagnosis suggested by OMIM for "distal edema pleural effusion" is Hereditary lymphedema 1 (also called Nonne-Milroy lymphedema, Lymphedema, early-onset or Primary congenital lymphedema).