Endoscopy in hernia at the esophageal hiatus.

Endoscopy is useful for confirming diagnosis of hiatal hernia as made by x-ray examination, for establishing the diagnosis when x-ray examinations do not disclose the herniation, and for observation of resultant abnormalities in the affected area. The authors' experience with gastroscopy and esophagoscopy in hiatal hernia is reported and the techniques and usual findings in these procedures are summarized.