The Facts
A hernia occurs when a portion of tissue in your body bulges into or penetrates a weakened muscle area. Theoretically, hernias can happen anywhere in your body, but most occur in the abdomen between the rib cage and the groin.
There are several types of hernias:
- Hiatus or diaphragmatic hernias occur when a piece of your stomach protrudes into the diaphragm (the muscle that separates the chest region from the abdominal area) via the opening through which the esophagus (food tube) passes into the stomach. Hernias may also occur in infancy because of a weakness in the abdominal wall. They occur in about 5% of full-term infants and up to 30% of premature babies.
- Inguinal or groin hernias occur when part of the abdominal contents (usually part of the intestine or a piece of bowel) protrudes into the groin area. Men are 10 times as likely as women to get them. They often occur after age 50 (on one side of the groin or both) and account for approximately 10% of all hospital admissions for surgery.
- Umbilical hernias are similar to inguinal hernias but are found in the area of the umbilicus (the navel or bellybutton area).
- Incisional hernias occur when a piece of intestine protrudes through a weakness in the abdominal wall in an area where surgery has been performed.
- Femoral hernias occur when a piece of intestine protrudes though the passage that is normally used by large blood vessels as they pass between the abdomen and leg.
- Paraesophageal hernias are very rare, but can be life-threatening because in some cases they can cause the entire stomach to slip into the chest cavity.