The patient underwent endoscopic dilatation therapy 30 times, stent placement 6 times, ERI 4 times, and oral hormones for 3 months during the 6-year course of the disease. The number of therapies per year decreased with the duration of the disease, and the remission time to dilatation gradually increased. ERI had the longest average remission time among the 4 therapy modalities and the shortest remission time for oral hormone(Table 1).