Proto A V, Lane E J
AJR Am J Roentgenol. 1977 Sep;129(3):433-40. doi: 10.2214/ajr.129.3.433.
While the radiologic literature discusses the presence of air in the esophagus on chest radiographs, this has almost always been reported as a finding associated with other radiologic abnormalities. In a retrospective study, esophageal air was noted on 36% of normal posteroanterior chest radiographs. The radiologic anatomy of the esophagus and the typical locations of air within it are discussed.
