“…62,65,69,70 One option is to use ®rst a watersoluble product, followed, if the ®ndings are normal, by a barium meal to improve sensitivity. 49,62,65,70 As this type of examination can miss 10±20% of lesions, 65 it can be combined with computed tomography. 71 Similarly, esophageal ®beroptic endoscopy (without insuf¯ation) can be used to diagnose esophageal perforation and to rule out the presence of a radiotransparent foreign body.…”