**2.4. Abdominal wall anomalies**

The evaluation is the integrity of the abdominal wall is part of routine midtrimester scan, although it can be performed starting with the first trimester examination. Conditions as: oligoamnios, placenta, or uterine wall proximity, excessive movement of the fetus can obstruct the proper visualization of the abdominal anterior wall. It is very important that the integrity of the abdominal wall is assessed by showing the insertion of the umbilical cord and visualization of the bladder in the pelvis, so that that bladder and cloacal exstrophy can be excluded.

The abdominal wall anomalies will be discussed separately in a subsequent chapter.
