The dilatations that occur in the body are classified according to different systems: (1) biliary: mega-gallbladder, mega-common bile duct; (2) cardiovascular: cardiomegaly; (3) urinary: megapelvis, megaureter, megabladder; (4) respiratory: bronchiectasis, megabronchus; (5) megapharynx (?); (6) megaesophagus; (7) megastomach; (8) achalasia of the pylorus or hypertrophic pyloric stenosis; (9) me...

A 48-year-old man with a giant leiomyoma of the esophagus accompanied by megaesophagus is reported in this paper. He presented with dysphagia and was treated successfully by means of an esopahgogastric resection. The literature is reviewed and the clinical and pathological aspects of this rare tumor are discussed.