Long-term outcomes after non-curative endoscopic submucosal dissection for early gastric cancer according to hospital volumes in Japan: a multicenter propensity-matched analysis

Surgical Endoscopy
Osamu DohiTooru Shimosegawa

Abstract

There is a lack of data regarding the long-term outcomes of endoscopic submucosal dissection (ESD) for early gastric cancer (EGC) without curative resection, and the relationship of these outcomes with hospital volumes remains unclear. This study evaluated long-term outcomes of patients who underwent ESD for EGC without curative resection according to hospital volumes in Japan. This multicenter retrospective study evaluated 1,969 patients who did not meet the criteria of the Japanese Gastric Cancer Association for curative resection between January 2000 and August 2011. Hospitals were classified according to the annual number of ESD procedures: low- and medium-volume group (LMVG), high-volume group (HVG), and very high-volume group (VHVG). Clinicopathological features, overall survival (OS), disease-specific survival (DSS), and recurrence-free survival (RFS) were compared across groups after a generalized propensity score matching analysis. In 495 pairs of generalized propensity score-matched patients, the 5-year OS, DSS, and RFS rates were 81.5%, 97.9%, and 97.6% for LMVG; 86.9%, 98.2%, and 97.0% for HVG; and 85.4%, 98.5%, and 97.6% for VHVG, respectively. The 5-year DSS and RFS rates did not significantly differ among the thr...Continue Reading

References

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