Its main symptoms are pain and difficulty in swallowing (dysphagia).<unk> s are thin membranes of normal esophageal tissue consisting of mucosa and submucosa that can partially protrude/obstruct the esophagus. They can be congenital or acquired. Congenital<unk> s commonly appear in the middle and inferior third of the esophagus, and they are more likely to be circumferential with a central or eccentric orifice. Acquired<unk> s are much more common than congenital<unk> s and typically appear in the cervical area (postcricoid). Clinical symptoms of this condition are selective (solid more than liquids) dysphagia, thoracic pain, nasopharyngeal reflux, aspiration, perforation and food impaction (the last two are very rare). file:Zervikales<unk> .Esophageal<unk>  stenosis in barium swallow examination lateral view. file:Web mit Jet-Phaenomen.Web with "jet-phenomenon". Arrowhead on incomplete opening of the upper esophageal sphincter. file:Zervikales<unk>  pa.Esophageal<unk>  stenosis in barium swallow examination frontal view.
Esophageal web
Nutcracker esophagus
Esophageal achalasia
Esophageal stricture
Megaesophagus
Esophageal intramural pseudodiverticulosis
Magic string 
Barrett's esophagus