esophagram or barium swallow oblique view showing esophagus for diagnosis gerd

abdominal ap backdrop barium body bowel ca cancer coats compound concept demonstrated diagnosis discomfort disease duodenum esophageal esophagram esophagus film gas gastric gastrointestinal gerd gi health healthcare hospital human illness image intestine investigation jejunum lesion mass medical medicine oblique or organ patient radiology showing sick small stomach study surgery swallow tract ulcer upper view