[Pathophysiology of gastroesophageal reflux and esophagitis (author's transl)].

Two new data explain pathophysiology of gastroesophageal reflux and esophagitis: first, the low esophagus pressure is altered in the reflux, second, the biliary salts act a part in the determination of esophagitis. New methods of explorations are proposed: esophageal manometric study, measure of intraluminal pH and soon perhaps radio isotope. That better understanding, those new explorations should allow to choose better than yesterday, therapeutic schemes. But many questions remain without answer.