A hernia occurs when one part of the body protrudes through a gap or opening into another part. A hiatal hernia forms at the opening in your diaphragm where your food pipe (esophagus) joins your sto

Hiatal hernia is a condition in which a portion of the stomach protrudes upward into the chest, through an opening in the diaphragm. The diaphragm is the sheet of muscle that separates the chest f