A hernia forms when the abdominal wall weakens, bulges, or tears. The inner lining of the abdomen and small intestine can poke out of this weakened area.
A hernia repair is a surgery to push the abdominal material back where it belongs and to repair the abdominal wall. At times the stomach may protrude into the chest cavity. This is called hiatus hernia. A hernia around the umbilicus is called umbilical hernia while those around the groin are called inguinal hernias.