Hiatal Hernia

The esophagus reaches the stomach through an opening in the diaphragm called the hiatus. Normally that opening grips the esophagus snugly and adds muscular support to the valve just below it.

When the opening enlarges, the junction and often part of the stomach slide upward into the chest. The valve loses the diaphragm's assistance, and the pressure difference that normally keeps contents down is undermined. Reflux follows.

The sliding type is by far the most common. The junction and upper stomach move up and down through the hiatus, and reflux is the usual consequence.

Paraesophageal types are less common and behave differently. Here part of the stomach herniates alongside the esophagus while the junction may stay in place. These can grow, can cause obstruction, and in rare cases can twist and compromise blood supply. That risk profile is why they are followed and treated differently from sliding hernias.

• Sliding: the junction moves into the chest, reflux predominates
• Paraesophageal: stomach herniates beside the esophagus, obstruction risk
• Mixed: features of both
• Large hernias containing other organs, uncommon and managed individually

Small hernias are often reported incidentally on imaging done for something else. That finding alone does not require treatment.

When it matters clinically, endoscopy shows the position of the junction and the state of the esophageal lining. A barium swallow demonstrates size and behavior during swallowing, which endoscopy alone can miss. Manometry is required before any repair, because esophageal motility determines how a repair should be tailored. pH testing quantifies the reflux burden.

Not every hiatal hernia needs an operation. Small hernias without symptoms are watched. Symptoms driven by reflux are often managed medically first, with attention to meal timing and portion size.

Repair enters the discussion when reflux is not controlled, when a large or paraesophageal hernia is causing obstruction or breathing symptoms, or when complications such as esophagitis or narrowing have developed. Repair involves returning the stomach to the abdomen and narrowing the enlarged opening, with the specifics tailored to the anatomy and the motility findings. What suits one anatomy does not suit another, which is why the testing precedes the plan.

Severe chest or upper abdominal pain with inability to swallow or vomit is a medical emergency and needs an emergency department, not an appointment. This is rare but it is the reason large paraesophageal hernias are taken seriously.

Everything else is routine. Persistent reflux, a hernia found on imaging, or symptoms that are limiting meals all warrant an outpatient evaluation.

This page is educational information, not medical advice. What is right for you is decided in consultation, after a review of your history, your symptoms, and your testing.