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Kaplan–Meier survival curves of DFS and OS for patients with M− and M+ not pre subtypes in different pathological stages after PSM. (A) DFS and (B) OS for patients with M− and M+ not pre subtype in pathological I stage; (C) DFS and (D) OS in pathological II stage; (E) DFS and (F) OS in pathological III stage. M−: without micropapillary pattern; M+ not pre: micropapillary pattern ≥5%, but not predominant; PSM, propensity score matching.
