Esophageal dysphagia
Esophageal dysphagia arises from mechanical or motility issues in the esophagus.
Esophageal dysphagia refers to difficulty swallowing caused by a problem in the body of the esophagus, the lower esophageal sphincter, or the cardia of the stomach. This is typically due to either a mechanical blockage or a motility disorder.
People with this condition often feel as though food gets stuck a few seconds after swallowing, and they usually point to the area just above the breastbone or behind the sternum as the spot where the obstruction seems to occur.
When a patient has trouble swallowing both solids and liquids from the start, a motility problem is the more likely cause. If the difficulty begins with solids and later progresses to include liquids, a mechanical obstruction is more probable. Once this basic distinction is made, the next step is to determine whether the problem is intermittent or progressive. Intermittent motility issues may point to diffuse esophageal spasm (DES) or a nonspecific esophageal motility disorder (NEMD). Progressive motility disorders include scleroderma or achalasia, especially when accompanied by chronic heartburn, regurgitation, breathing problems, or weight loss. Intermittent mechanical dysphagia often suggests an esophageal ring, while progressive mechanical dysphagia is most commonly due to a peptic stricture or esophageal cancer.
An esophageal stricture, or narrowing of the esophagus, is usually a complication of long-term acid reflux, most often from gastroesophageal reflux disease (GERD). It tends to occur in older patients who have had GERD for many years. Other causes include acid reflux from Zollinger–Ellison syndrome, trauma from a nasogastric tube, and chronic acid exposure in people with poor esophageal motility due to scleroderma. Non-acid-related causes of peptic strictures include infectious esophagitis, ingestion of chemical irritants, pill irritation, and radiation. This type of stricture is a progressive mechanical dysphagia: patients first have trouble with solids, then with liquids. Dysphagia is always present when the stricture’s diameter is less than 12 mm, but not when it is above 30 mm. Symptoms of the underlying cause are also usually present.
Esophageal cancer also causes progressive mechanical dysphagia. Patients typically experience rapidly worsening difficulty swallowing—first solids, then liquids—along with significant weight loss (over 10 kg) and loss of appetite.
Quick Facts
- Field
- Gastroenterology
Facts from the source article.
Lore & Background
Esophageal dysphagia is characterized by the sensation of food getting stuck several seconds after swallowing, with patients typically pointing to the suprasternal notch or behind the sternum as the site of obstruction. The condition is classified based on whether dysphagia occurs to both solids and liquids (suggesting a motility problem) or initially to solids progressing to liquids (suggesting a mechanical obstruction). Intermittent or progressive patterns further narrow the differential diagnosis.
Reader's Guide
Esophageal dysphagia serves as a key clinical framework for diagnosing esophageal disorders. The distinction between motility problems and mechanical obstructions guides further evaluation, such as upper endoscopy, barium swallow, or manometry. Common causes include esophageal stricture (often from GERD), esophageal cancer (associated with Barrett's esophagus or smoking/alcohol), rings and webs (including Schatzki rings and Plummer–Vinson syndrome), achalasia, scleroderma, and spastic motility disorders like diffuse esophageal spasm. Treatment involves GI, pulmonary, or ENT consultations, along with speech therapy and dietary modifications. The condition's significance lies in its systematic approach to identifying underlying pathology, from benign to malignant causes.
Did You Know?
- If dysphagia occurs to both solids and liquids, it is most likely a motility problem; if initially to solids then progressing to liquids, it is most likely a mechanical obstruction.
- Achalasia is characterized by failure of lower esophageal sphincter relaxation and loss of peristalsis in the distal esophagus.
- Esophageal rings, known as Schatzki rings, are mucosal rings located near the gastroesophageal junction and cause intermittent mechanical dysphagia.
- Esophageal cancer presents with rapidly progressive dysphagia, weight loss over 10 kg, and anorexia, and is more common in the elderly.
More in Symptoms and signs: Digestive system and abdomen 1-24
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