Fig. 2.

Prognostic values of CRM on residual rectal cancer after preoperative chemoradiotherapy in subgroup analysis. Kaplan-Meier survival curves of (A) RFS and (B) CSS for patients without downstaging; and (C) RFS and (D) CSS for patients with downstaging. Kaplan-Meier survival curves of (E) RFS and (F) CSS for patients with pathologic N0 category; and (G) RFS and (H) CSS for patients with pathologic N1–3 category. CRM, circumferential resection margin; RFS, recurrence free survival; CSS, cancer specific survival;