An esophageal stricture is a narrowing of the esophagus, the tube that carries food from your throat to your stomach. This narrowing makes swallowing progressively harder, starting with solid foods and eventually affecting liquids if left untreated. Strictures can be benign (non-cancerous) or malignant (caused by cancer), and benign strictures are far more common.
How It Feels and What to Watch For
The first and most noticeable symptom is difficulty swallowing, known as dysphagia. You might initially compensate without thinking about it, taking smaller bites, chewing more thoroughly, or gradually avoiding tougher foods like steak or bread. As the stricture worsens, those adjustments stop helping.
Clinicians grade swallowing difficulty on a scale from 0 to 4. At a score of 1, you can still eat some solid foods. At 2, only soft foods go down comfortably. At 3, you’re limited to liquids. At 4, nothing passes through. Most people seek help somewhere between stages 1 and 2, when mealtimes start feeling frustrating or anxiety-producing.
Beyond swallowing trouble, esophageal strictures can cause food getting stuck in the esophagus (food impaction), pain when swallowing, chest pain, and unintentional weight loss. Food impaction can be frightening, and it sometimes requires emergency removal.
What Causes the Narrowing
Chronic acid reflux (GERD) is the leading cause of benign esophageal strictures. When stomach acid repeatedly washes up into the esophagus over months or years, the lining becomes inflamed and eventually scars. That scar tissue is less flexible than healthy tissue, and as it builds up, the opening narrows.
Other causes include:
- Eosinophilic esophagitis (EoE): an allergic inflammatory condition that damages the esophageal lining and can create ring-like narrowing along its length.
- Radiation therapy: treatment for head, neck, or chest cancers can scar the esophagus. About one-third of radiation-related strictures recur after treatment, according to data published in PMC.
- Swallowing caustic substances: accidental or intentional ingestion of chemicals like lye causes severe burns that heal into tight scars.
- Surgical scarring: procedures involving the esophagus or nearby structures can lead to scar-based narrowing during healing.
- Prolonged use of a feeding tube: pressure from the tube can irritate the lining over time.
Malignant strictures are caused by tumors growing in or pressing against the esophagus. The treatment approach for malignant strictures is fundamentally different because it focuses on the cancer itself, not just the narrowing.
How Strictures Are Diagnosed
If you describe increasing difficulty swallowing, your doctor will typically start with one of two tests. A barium swallow involves drinking a chalky liquid that coats the esophagus and shows up on X-ray, revealing the location and severity of any narrowing. An upper endoscopy uses a thin, flexible camera threaded through your mouth and into the esophagus, giving the doctor a direct view of the tissue.
Endoscopy has an advantage: during the same procedure, the doctor can take tissue samples to determine whether the stricture is benign or malignant, check for eosinophilic esophagitis, and often begin treatment on the spot.
Dilation: The Primary Treatment
The most common treatment is endoscopic dilation, a procedure that physically stretches the narrowed area open. There are two main tools for this. Bougie dilators are tapered, flexible rods passed through the stricture in progressively larger sizes. Balloon dilators use a deflated balloon positioned inside the stricture and then inflated to widen it.
Neither approach has proven clearly superior to the other. The choice often depends on the stricture’s location, length, and the doctor’s experience. For safety, dilators are advanced using “the rule of 3,” which limits each session to three consecutive size increases of about 1 millimeter each. This minimizes the risk of tearing the esophageal wall.
Most people are awake but sedated during dilation. The procedure itself is relatively quick, and you can usually go home the same day. Your throat may feel sore for a day or two afterward. Many strictures require multiple dilation sessions spaced two to four weeks apart, gradually opening the esophagus to a functional diameter of 12 to 14 millimeters.
The main risk of dilation is perforation, a small tear through the esophageal wall. In hospitalized patients, perforation occurs in roughly 2.4% of dilation procedures. While that number is low, perforation is serious and may require surgical repair, which is why sessions are done carefully and incrementally.
Preventing Recurrence
Stretching the esophagus open treats the symptom, but if the underlying cause remains, the stricture often comes back. For acid reflux-related strictures, long-term acid-suppressing medication is critical. Proton pump inhibitors (PPIs), the class of drugs that includes omeprazole and similar medications, are typically prescribed on an ongoing basis, sometimes indefinitely. Some patients need higher-than-standard doses to keep acid damage in check, and the dose is adjusted based on how you respond and what follow-up endoscopies show.
For strictures caused by eosinophilic esophagitis, treatment focuses on controlling the allergic inflammation through dietary changes, swallowed topical steroids, or both. For radiation-induced strictures, the picture is less optimistic. Research shows about 33% of radiation-related strictures recur, typically within about five months of successful dilation.
A stricture is considered “refractory” when it keeps coming back despite repeated dilations and appropriate medical therapy. For these stubborn cases, doctors may place a stent, a small tube that holds the esophagus open from the inside. Self-expanding metal stents and plastic stents are both used. Biodegradable stents, which dissolve over time and don’t require removal, have been available in Europe since 2007. However, most patients in clinical studies experienced recurrent narrowing within six months, and no convincing evidence yet shows biodegradable stents outperform other types.
Living With an Esophageal Stricture
Between dilation sessions or while managing a mild stricture, eating adjustments make a real difference. Cutting food into small pieces, chewing thoroughly, and eating slowly can reduce the chance of food getting stuck. Softer foods and plenty of liquid during meals help food pass more easily. Avoiding dry, tough, or fibrous foods like raw vegetables, crusty bread, and stringy meat reduces the risk of impaction.
If you’ve had a stricture dilated, pay attention to changes in your swallowing over the following weeks and months. A gradual return of difficulty swallowing is the most reliable signal that the stricture is narrowing again and another dilation may be needed. Keeping up with follow-up endoscopies, even when you feel fine, helps catch recurrence before it becomes severe. Most people with benign strictures manage them successfully with a combination of periodic dilation and consistent medical therapy to address the root cause.