Iron-Deficiency Dysphagia

Iron-deficiency dysphagia is a thin membrane within the esophageal lumen; classified by esophageal location as upper, middle and lower esophageal web, upper web most common. Most esophageal-web patients are asymptomatic, found on health check or incidental GI barium study; a few present with dysphagia; both sexes affected; rare in China. Pathologic findings are few: most upper-web patients have minimal esophageal mucosal change, and web size progresses slowly in a relatively static state; a few autopsies show esophageal/pharyngeal mucosal atrophy, enlarged squamous epithelial cells with vacuolation, and upper-esophageal muscle atrophy replaced by collagen; in iron deficiency, esophageal epithelial glycogen is depleted; web biopsy histology is generally normal, with a few showing chronic inflammation.

Common Symptoms

Symmetric esophageal dilatation; pallor; dysphagia; loss of tongue papillae; emaciation; angular cheilitis

Causes and Pathogenesis

(A) Etiology: Cause is unclear; most believe iron deficiency is the basic factor: insufficient iron causes epithelial changes leading to dysphagia. E.g. iron-deficiency-anemia patients often also have upper esophageal web; clinically, iron therapy without esophageal dilatation resolves dysphagia, strongly supporting the theory. Chisholm et al. studied 186 iron-deficient cases: (1) esophageal web in ~10%, none in controls; (2) angular cheilitis/glossitis from iron deficiency more common in web patients; (3) tooth loss with hypothyroidism more common in web patients. These support iron deficiency as prerequisite for upper web. Higher female incidence may come from reduced iron-containing food intake due to dysphagia plus menstrual iron loss; infant cases are rare, possibly congenital or related to iron-deficiency anemia. Epidemiologically, esophageal webs occur in normal non-anemic people and dysphagia may occur without anemia, so iron-deficiency-dysphagia relation is not absolute. (B) Mechanism: few pathologic findings; most upper-web patients have minimal mucosal change, slow web progression; a few autopsies show esophageal/pharyngeal mucosal atrophy, enlarged vacuolated squamous cells, upper-esophageal muscle atrophy replaced by collagen; iron deficiency depletes epithelial glycogen; web biopsy usually normal, a few chronic inflammation.

Treatment

Drug therapy, rehabilitation, surgery

Preventive Measures

Iron deficiency is the basic factor: insufficient iron causes iron-containing enzyme-system deficiency affecting mucosal metabolism and epithelial changes, forming esophageal web and dysphagia. In early cases without esophageal dilatation, iron therapy alone usually resolves dysphagia; therefore early iron supplementation for anemia rapidly improves dysphagia.

Department to Visit

It is recommended to visit the Gastroenterology department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.