The stent delivery system passed

all cardias, and the stent placement was successful in all of patients under the guidance of fluoroscopy. The stent was retained approximately 3–7 days after insertion. All stents, including the two stents that migrated into stomach, were successfully removed via endoscopy. After the stent removal, all of the patients were able to ingest semisolid check details or solid foods. Stent insertion or removal procedure-related complications included pain, reflux, bleeding, stent migration, or esophageal perforation. In this group, pain occurred in 27 patients (42.9%), reflux in eight (12.7%), bleeding in 10 (15.9%), and stent migration in two (3%), and there was no statistical difference (P = 0.057, P = 0.276, P = 0.361, respectively) compared to that in Group A. However, total adverse events occurred in 17 patients (44.7%) in Group A and in 35 patients (55.6%) in Group B, which presented a statistical difference (P = 0.0305). No esophageal perforation occurred. TSS and esophageal manometry improved from 6.22 ± 2.26–0.89.74 ± 0.88 and 58.92 ± 8.47 mmHg to 9.03 ± 4.45 mmHg, respectively, which was a significant statistical difference (P < 0.0001) (Figs 2,3). The barium column height and width improved from 12.82 ± 2.51 and 6.10 ± 1.68 cm to 1.15 ± 1.41 and 0.93 ± 1.01 cm, respectively, which also indicated a significant improvement (P < 0.0001)

(Fig. 4). The improvement of TSS, LES pressure, and barium column height or width post-treatment was more conspicuous in Group B than in Group A and were statistically find more significant (P < 0.0001). The mean follow-up period was 71.26 ± 40.9 months (range: 15–137 months) in Group A PARP activity and 53.92 ± 36.22 months (range: 13–133 months) in Group B. During the regularly-scheduled interval follow up, TSS and LES pressure in both groups presented gradual aggravation compared to those measurements post-treatment. At the end of follow up, TSS and LES pressure in Group B were 4.00 ± 1.00 and 43.67 ± 12.66 mmHg, respectively, compared to the post-procedure values of 0.89.74 ± 0.88 (P < 0.0001) and 9.03 ± 4.45 mmHg (P = 0.042), respectively. In Group A, TSS and LES pressure at the end of follow up were 10.20 ± 0.45

and 58.60 ± 8.65 mmHg, respectively, compared with the post-procedure values of 1.74 ± 1.06 (P < 0.0001) and 15.63 ±  6.88 mmHg (P = 0.0004), respectively (Figs 2,3). TSS in Group A at the end of follow up had a significant statistical difference to those in Group B (P = 0.0096), while LES pressure in Group A was not significantly different (P = 0.1687) compared with Group B. However, at the 8–10-year follow up, the statistical difference was apparent in the TSS and LES pressure difference between the two groups (P < 0.0001) (Figs 2,3). The recurrence rate in Group A was 50% (19 out of 38) at the 8–10-year follow up and at 57.9% (22 out of 38) at the > 10 year follow up, but the corresponding recurrence rates in Group B were 9.5% (6 out of 63) (P < 0.0001) and 11.