A vertical bulge down the midline of the abdomen can be seen in many newborns when intra-abdominal pressure increases. In this photo, a shadow lateral to the bulge can be seen going up the left side of the abdomen, starting near the umbilical clamp. Diastasis recti is caused by a relative weakness of the fascia between the two rectus abdominus muscles. It is not a herniation and is not pathologic. With time, this will disappear.
photo by Janelle Aby, MD