CausesBy Mayo Clinic Staff
A hiatal hernia occurs when weakened muscle tissue allows your stomach to bulge up through your diaphragm. It's not always clear why this happens, but pressure on your stomach and age-related changes in your diaphragm may contribute to the formation of a hiatal hernia.
How a hiatal hernia forms
Your diaphragm is a large, dome-shaped muscle that separates your chest cavity from your abdomen. Normally, your esophagus passes into your stomach through an opening in the diaphragm called the hiatus.
Hiatal hernias occur when the muscle tissue surrounding this opening becomes weak, and the upper part of your stomach bulges up through the diaphragm into your chest cavity.
Possible causes of hiatal hernia
Hiatal hernia could be caused by:
Feb. 03, 2015
- Injury to the area
- Being born with an unusually large hiatus
- Persistent and intense pressure on the surrounding muscles, such as when coughing, vomiting or straining during a bowel movement, or while lifting heavy objects
- Ferri FF. Ferri's Clinical Advisor 2015: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2015. https://www.clinicalkey.com. Accessed Jan. 6, 2015.
- Kahrilas PJ. Hiatus hernia. http://www.uptodate.com/home. Accessed Jan. 7, 2015.
- Townsend CM Jr, et al. Sabiston Textbook of Surgery: The Biological Basis of Modern Surgical Practice. 19th ed. Philadelphia, Pa.: Saunders Elsevier; 2012. https://www.clinicalkey.com. Accessed Jan. 7, 2015.
- Yeo CJ. Shackelford's Surgery of the Alimentary Tract. 7th ed. Philadelphia, Pa.: Elsevier; 2013. https://www.clinicalkey.com. Accessed Jan. 7, 2015.
- Mahawar KK, et al. Simultaneous sleeve gastrectomy and hiatus hernia repair: A systematic review. Obesity Surgery. 2015;25:159.
- Katz PO, et al. Corrigendum: Guidelines for the diagnosis and management of gastroesophageal reflux disease. American Journal of Gastroenterology. 2013;108:308.
- Guidelines for the management of hiatal hernia. Society of American Gastrointestinal and Endoscopic Surgeons. http://www.sages.org/publications/guidelines/guidelines-for-the-management-of-hiatal-hernia/. Accessed Jan. 7, 2015.
- Golden AK. Decision Support System. Mayo Clinic, Rochester, Minn. Sept. 26, 2014.
- Rakel D. Integrative Medicine. 3rd ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.clinicalkey.com. Accessed Jan. 9, 2015.
- Picco MF (expert opinion). Mayo Clinic, Rochester, Minn. Jan. 18, 2015.
- Rohren CH (expert opinion). Mayo Clinic, Rochester, Minn. Jan. 10, 2015.