Complications of<unk>  include the following: * Odynophagia, or painful swallowing * Hematemesis, or bloody vomit * Esophageal perforation * Mediastinitis
Esophageal dilatation
Esophagogastric dissociation
Megaesophagus
Esophageal dysphagia
Esophageal spasm
Esophageal web
Esophageal motility disorder
Esophageal stricture