Esophageal symmetrical enlargement

The X-ray characteristics of the lower esophageal web are different from those of the middle esophageal web and the lower esophageal ring. The proximal end (head end) of the web is symmetrically enlarged and the distal end (esophageal vestibular region) is double concave. One of the clinical manifestations of esophageal webs and esophageal rings. Oesophageal web and esophageal ring are easily confused with esophageal muscle contraction and stenosis. Strictly speaking, the esophageal web is a thin (2 to 3 mm) and brittle web-like diaphragm composed of only the mucosa and submucosa in the lumen of the esophagus. The esophageal ring usually refers to a thick and tough narrow ring composed of the esophageal mucosa and muscle layers. The X-ray performance of the two is difficult to distinguish, so esophageal webs and rings should be identified based on symptoms, signs, X-ray signs, esophageal manometry, and endoscopic biopsy.