Umbilical Hernia Underlying Cause
In order for an umbilical hernia to form, there must be a hole, tear or weakened area in the abdominal wall near the umbilicus. This abnormal weakness allows the intestine to protrude through the hole or tear. The intestine forms a bulge underneath the skin.
Causes for weakness in the wall of the abdomen include:
- Birth defect:
- The tissue that surrounds an organ develops abnormally
- Abdominal injury
- Abdominal surgery
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- Gonzalez R, Mason E, Duncan T, Wilson R, Ramshaw BJ. Laparoscopic versus open umbilical hernia repair. JSLS. 2003 Oct-Dec;7(4):323-8. 
- Lau H, Patil NG. Umbilical hernia in adults. Surg Endosc. 2003 Dec;17(12):2016-20.