Tough to say: Without looking at the images. Guessing at this point is unlikely to be constructive.
Answered 4/30/2013
5.2k views
Can't tell: Impossible to say without images. Could be a mass; could just be that your esophagus was peristalsing. If you are saying that the edges of the esophagus is white from top to bottom, and the center is black, the black is normal air.
Answered 5/4/2013
5.1k views
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