[The water test in the demonstration of gastroesophageal reflux and of an unsuspected reflux esophagitis (author's transl)].

Further report on the importance of routine "water test" in the demonstration of an unsuspected gastroesophageal reflux and possible associated reflux esophagitis. Analysis based on 24,106 consecutive and unselected gastrointestinal tract examinations and description of the technique.