{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T01:55:13Z","timestamp":1779933313857,"version":"3.53.1"},"reference-count":12,"publisher":"FapUNIFESP (SciELO)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Radiol Bras"],"abstract":"<jats:p>Abstract  Objective: To identify and classify the radiographic patterns of megaesophagus in Chagas disease, as seen on esophagograms and chest X-rays.  Materials and Methods: This was a prospective study of 35 patients diagnosed with esophageal disease via manometry. The changes found on esophagograms were stratified according to Rezende's classification, divided into four categories (grades I through IV) determined by the degree of dilatation and impairement of esophageal motility. We subsequently correlated that ranking with the chest X-ray findings: gastric air bubble; air-fluid level; and mediastinal widening.  Results: Among the 35 patients, the esophageal disease was classified as grade I in 9 (25.7%), grade II in 3 (8.6%), grade III in 19 (54.3%), and grade IV in 4 (11.4%). None of the patients with grade I esophageal disease showed changes on chest X-rays. In two of the three patients with grade II disease, there was no gastric air-bubble, although there were no other findings in any of the grade II patients. Of the 19 patients with grade III disease, 15 had abnormal findings on X-rays. All four patients with grade IV disease showed abnormalities.  Conclusion:  The use of Rezende's classification is feasible, encompassing findings ranging from the subtle changes that characterize the initial phases of esophageal disease to the complete akinesia seen in dolicomegaesophagus. Chest X-ray findings are more common in patients with advanced stages of the disease and indicate the degree of esophageal involvement in Chagas disease.<\/jats:p>","DOI":"10.1590\/0100-3984.2015.0141","type":"journal-article","created":{"date-parts":[[2016,9,21]],"date-time":"2016-09-21T21:51:44Z","timestamp":1474494704000},"page":"358-362","source":"Crossref","is-referenced-by-count":13,"title":["Radiological findings in megaesophagus secondary to Chagas disease: chest X-ray and esophagogram"],"prefix":"10.1590","volume":"49","author":[{"given":"Thiago Giansante","family":"Abud","sequence":"first","affiliation":[{"name":"Universidade Federal de S\u00e3o Paulo,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lucas Giansante","family":"Abud","sequence":"additional","affiliation":[{"name":"Hospital S\u00e3o Francisco,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vanessa Sales","family":"Vilar","sequence":"additional","affiliation":[{"name":"Hospital S\u00e3o Francisco,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Denis","family":"Szejnfeld","sequence":"additional","affiliation":[{"name":"Universidade Federal de S\u00e3o Paulo,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Samuel","family":"Reibscheid","sequence":"additional","affiliation":[{"name":"Universidade Federal de S\u00e3o Paulo,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"530","published-online":{"date-parts":[[2016,9,22]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1590\/S0074-02761990000100011","article-title":"Prevalence of Trypanosoma cruzi infection in blood banks of seven departments of Bolivia","volume":"85","author":"Carrasco R","year":"1990","journal-title":"Mem Inst Oswaldo Cruz"},{"key":"ref2","series-title":"Doen\u00e7a de Chagas","author":"Araujo-Jorge 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