Gastrochisis is a rare birth defect. It happens in about one in 5,000 births. Gastroschisis is where the stomach and bowel are formed on the outside of the baby’s belly. This happens during the fourth week of pregnancy.
The opening is usually on the right side of the belly button and is usually less than 2 inches in size. The bowel is unprotected so there is a chance it can be irritated, swollen and damaged.
About 10 percent of babies born with gastroschisis also have a part of the bowel that does not develop correctly. Most babies with gastroschisis do not have any other birth defects.