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021] and regional nodes examined (hr 0.588; = 0.02). In patients with advanced disease, no significant difference in survival between gasc and gac was observed ( = 0.212), although survival was significantly poorer for gasc after psm ( = 0.019). Multivariate analysis after psm revealed that the independent prognostic factors for gasc were invasion depth (hr 1.303; = 0.036) and chemotherapy (hr 0.444; 0.001). Relative to gac, gasc was associated with more aggressive features, although survival outcomes were similar after pcs. Che