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Acid Reflux; Gastroesophageal Reflux; Gastroesophageal Reflux (GERD); Gastroesophageal Reflux Disease; Gastroesophageal ... 

Hiatus hernia or hiatal hernia is the protrusion (or hernia) of the upper part of the stomach into the thorax through a tear or weakness in the diaphragm.

Gastroesophageal reflux disease, or GERD, occurs when the lower esophageal sphincter (LES) does not close properly and stomach contents leak back, or reflux, into the esophagus. The LES is a ring of muscle at the bottom of the esophagus that acts like a valve between the esophagus and stomach. The esophagus carries food from the mouth to the stomach.


Hiatal Hernia as related to GERD