RESUMO
BACKGROUND: Radiofrequency ablation (RFA) is an effective treatment for Barrett's esophagus (BE) dysplasia. For patients with dysplasia refractory to RFA, data are limited regarding efficacy of endoscopic therapy. OBJECTIVE: To assess the efficacy and safety of cryotherapy in patients with BE dysplasia who failed RFA. DESIGN: Single-center, retrospective, cohort study. SETTING: Tertiary-care center between 2006 and 2013. PATIENTS: Patients with BE and low-grade dysplasia (LGD), high-grade dysplasia (HGD), or intramucosal carcinoma (IMC) were referred for RFA every 2 to 3 months. Response was determined by complete eradication of dysplasia (CE-D). INTERVENTIONS: Patients without CE-D or those with recurrent dysplasia after initial eradication were offered cryotherapy. MAIN OUTCOME MEASUREMENTS: Eradication of dysplasia and/or cancer. Secondary outcome, eradication of intestinal metaplasia. RESULTS: A total of 121 patients underwent RFA for BE dysplasia (55% HGD, 26% LGD, 17% IMC, 2% indefinite dysplasia). After a median of 3 RFA sessions, 75% (n = 91) had CE-D. Patients without CE-D were more likely to have a longer BE length (7 cm vs 4 cm; P = .004) and a hiatal hernia (83% vs 55%; P = .005). Sixteen patients (14 with failed CE-D and 2 with recurrent dysplasia) were offered cryotherapy and had endoscopic follow-up. Seven (57%) had HGD before cryotherapy (6 with LGD, 2 with IMC, and 1 with indefinite dysplasia). After cryotherapy, 12 (75%) had CE-D, and 5 (31%) had eradication of intestinal metaplasia. Of patients with IMC, 100% had CE-D. Three patients developed strictures that responded to dilation. LIMITATIONS: Single center, retrospective nature of study. CONCLUSION: For patients with refractory dysplasia or recurrent dysplasia after RFA, salvage cryotherapy is a safe and effective endoscopic therapy.