抄録
The author's experience of reexamination of the 2 cases treated 10 years before revealed the following:
(1) Stenosis recurs unless dilatation therapy is continued for preventing recurrence.
(2) When, however, stenosis recurs, it progresses very slowly and never attains to a high degree.
(3) Symptoms of stenosis occur even when the esophageal cavity becomes slightly narrower because of the coexistence of the lesion of peristalsis of the esophageal walls.
(4) Each of the cases examined became conscious of the difficulty of passage after about 10 years of the treatment.
