The esophagus, stomach, and duodenum.
Glick
S N
SN
Department of Radiology, Hahnemann University Hospital, Philadelphia, Pennsylvania.
D001466:Barium Sulfate; D004378:Duodenal Diseases / Q000000981:diagnostic imaging*; D004935:Esophageal Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D013272:Stomach Diseases / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
D001466:Barium Sulfate