[Changes megaesophagus in a six-year-old boy].
D000328:Adult; D014355:Chagas Disease / Q000150:complications*; D002648:Child; D003168:Complement Fixation Tests; D004935:Esophageal Diseases / Q000209:etiology*; D006801:Humans
Megaesófago chagásico en un niño de seis años.