The x-ray features of the lower esophageal web differ from both the middle esophageal web and the lower esophageal ring. The proximal end of the web (cephalic end) shows symmetrical expansion of the esophagus and the distal end (esophageal vestibular area) shows a double concave surface. This is one of the clinical manifestations of oesophageal webbing and oesophageal rings. The oesophageal web and esophageal ring are easily confused with esophageal muscle contraction and stricture. Strictly speaking, oesophageal web is a thin (2-3 mm) and brittle web-like septum consisting of only the mucosa and submucosa in the lumen of the esophagus, which can be seen anywhere in the esophagus. The esophageal ring often refers to a thick, tough, narrow ring composed of the mucosal and muscular layers of the esophagus. It is difficult to distinguish between the two on X-ray, so the distinction between esophageal webs and rings should be based on symptoms, signs, X-ray signs esophageal manometry and endoscopic biopsy. What are the dietary considerations for symmetrical esophageal enlargement? Patients are advised to eat iron-rich foods; vitamin-rich foods; foods that promote iron absorption; spicy and stimulating foods; stimulating drinks; greasy foods. Desirable foods Pig’s blood: Pig’s blood is an iron-rich food to raise iron for patients with iron deficiency anemia. 200-300 grams per day is appropriate. Oranges: Oranges are rich in vitamin C, which can promote the absorption of iron. 200-300 grams per day is appropriate. Carp: Carp has the ability to promote the absorption of iron and is also rich in iron, calcium, zinc and other trace elements. It is advisable to have 200-300 grams per day. Avoid food Chili: Chili is a stimulating and spicy food that can easily stimulate the gastrointestinal mucosa leading to gastrointestinal congestion, swelling and speeding up the peristalsis of the intestines, which is not conducive to the absorption of iron. Try to avoid. Strong tea: strong tea contains caffeine, which has the adverse effect of inhibiting the absorption of iron. Avoid drinking it as much as possible. Small sesame pepper: contains high fat, which is not conducive to the absorption of trace elements. Do not exceed 300 grams a week.