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[[File:Barium Swallow.jpg|300px|thumb|left|''A barium swallow en route to fetch more barium'']]
A '''barium swallow''' is a subtype of bird of the family ''Hirundinidae'' (short bill, long and pointed wings, and a forked tail) that feeds primarily on barium as well as insects. A '''barium swallow''' can identify a [[Bird's Beak|bird's beak]] on esophagram.
[[Category:Medical Tests & Procedures]]
