How useful are barium swallows?

I once had one that claimed to find a tiny defect in my esophagus, but then upon completing an endoscopy a month later the esophagus was completely normal. I've heard the barium swallow is rarely used now a days; is it because it isn't very accurate?

submitted by /u/pupperdoglol
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source https://www.reddit.com/r/Radiology/comments/ifitlj/how_useful_are_barium_swallows/