Omphalocele is a birth defect that creates a gap in the muscles and skin where the bellybutton should be. Abdominal tissue and organs, like the intestines, push through the gap to the outside of the body. The misplaced abdominal tissue and organs are enclosed in a sac.

The omphalocele may be small with just a section of intestines or can be large and involve several abdominal organs. It is often associated with other birth defects.

Normal Anatomy of the Abdominal Organs
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