A 21-year-old woman comes to the university health clinic ...

This is caused by infection of Trypanosoma cruzi in the muscles of the heart, esophagus, and colon. A serum agglutination test is a noninvasive means of testing for this infection, and is highly sensitive. Left untreated, heart failure and megacolon could develop. A chest CT (choice B) would not reveal any specific findings of Chagas disease. ................
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