Esophageal web

Esophageal webs are thin membranes located in the middle or upper esophagus. They are mainly observed in the Plummer-Vinson syndrome, whis is associated to iron deficiency anemia. Its main symptoms are painand difficulty in swallowing(dysphagia).

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It uses material from the http://en.wikipedia.org/wiki/Esophageal+web Wikipedia article Esophageal web.