title: [A longitudinal radiologic study of the esophagus in an endemic area of Chagas' disease over a 6-year period].
abstract: A longitudinal study over six years was undertaken of 494 residents of the municipality of Mambaí, Goiás. Two hundred and twelve (43%) were seropositive in 1975/76 and 199 of 464 of the same patients group, positive in 1980/82 (42.8%). At both examination single radiographs of the oesophagus were obtained immediately after ingestion of 75 ml of barium sulphate solution and a second X-ray taken one minute later. Among the 201 seropositive patients without megaesophagus in the first study 4 (2%) evolved megaesophagus during the six years of observation. During this time, using Rezende's classification, patients with established megaesophagus, changed their group in the following manner. Only one Group I patient changed to group II. Only one group II patient progressed to group IV. Progress of megaesophagus in the affected patients occurred in 2.8% of 212 patients. Also four patients with grade I megaesophagus initially had a normal oesophagogram on the follow up examination. Ten patients had doubtful oesophagogram initially and six on follow up, 75% of these patients were seropositive. This study could indicate that a doubtful oesophagogram is an early sign of megaoesophagus.
authors.affiliation: Núcleo de Medicina Tropical e Nutrição, Universidade de Brasilia, DF, Brasil.
authors.forename: C
authors.initials: C
authors.lastname: Castro
authors.forename: V
authors.initials: V
authors.lastname: Macêdo
authors.forename: J M
authors.initials: JM
authors.lastname: Rezende
authors.forename: A
authors.initials: A
authors.lastname: Prata
mesh_terms: D000328:Adult; D000367:Age Factors; D001938:Brazil / Q000453:epidemiology; D014355:Chagas Disease / Q000000981:diagnostic imaging* / Q000453:epidemiology; D004197:Disease Reservoirs; D004931:Esophageal Achalasia / Q000000981:diagnostic imaging / Q000453:epidemiology; D004947:Esophagus / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012737:Sex Factors
vernacular_title: Estudo radiológico longitudinal do esôfago, em área endêmica de doença de Chagas, em um período de seis anos.