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  • Title: Therapeutic outcomes of endoscopic submucosal dissection of differentiated early gastric cancer in a Western endoscopy setting (with video).
    Author: Emura F, Mejía J, Donneys A, Ricaurte O, Sabbagh L, Giraldo-Cadavid L, Oda I, Saito Y, Osorio C.
    Journal: Gastrointest Endosc; 2015 Nov; 82(5):804-11. PubMed ID: 25952087.
    Abstract:
    BACKGROUND: Large multicenter gastric cancer endoscopic submucosal dissection (ESD) studies conducted at major Japanese institutions have reported en bloc resection, en bloc tumor-free margin resection, and curative resection rates of 92.7% to 96.1%, 82.6% to 94.5%, and 73.6% to 85.4%, respectively, with delayed bleeding and perforation rates of 0.6% to 6.0% and 3.6% to 4.7%, respectively. Although ESD is currently an alternative treatment in some countries, particularly in Asia, it remains uncertain whether ESD therapeutic outcomes in Western endoscopy settings can be comparable to those achieved in Japan. OBJECTIVE: To evaluate the ESD therapeutic outcomes for differentiated early gastric cancer (EGC) in a Western endoscopy setting. DESIGN/SETTING: Consecutive case series performed by an expertly trained Western endoscopist. PATIENTS: Fifty-three patients with 54 lesions. INTERVENTIONS: ESD for early gastric cancers (T1) satisfying expanded inclusion criteria. MAIN OUTCOME MEASUREMENTS: En bloc resection, en bloc tumor-free margin resection, and curative resection rates were 98%, 93%, and 83%, respectively. The delayed bleeding rate was 7%, and the perforation rate was 4%. RESULTS: The mean patient age was 67 years, and the mean tumor size was 19.8 mm, with 54% of the lesions located in the lesser curvature. The median procedure time was 61 minutes, with ESD procedures 60 minutes or longer associated with submucosal fibrosis (P < .001) and tumor size 25 mm or larger (P = .03). In every ESD procedure, both circumferential incision and submucosal dissection were performed by using a single knife. Two of the 4 delayed bleeding cases required surgery, and all perforations were successfully managed by using endoscopic clips. LIMITATION: Long-term outcome data are currently unavailable. CONCLUSION: ESD for differentiated EGC resulted in favorable therapeutic outcomes in a Western endoscopy setting comparable to those achieved at major Japanese institutions.
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