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Cumulative stent patency and Kaplan–Meier overall survival curves. (a) The mean stent patency period was 8.4 ± 4.2 months (range, 2–17 months). The 3-, 6-, 9-, and 12-month cumulative stent patency rates were 83.1%, 69.2%, 43.7%, and 31.2%, respectively. (b) The mean survival was 10.0 ± 5.1 months (range, 2–22 months). The 3-, 6-, 9-, and 12-month cumulative survival rates were 83.3%, 80.0%, 52.2%, and 38.3%, respectively.
