Disease‐free survival in T1 colorectal cancers. Expectedly, the Kaplan‐Meier analysis disclosed that T1 cancers with LNM (green color) had an associated unfavorable disease‐free survival than those without (blue color; p = .011) (A). With regard to the anatomic location of T1 cancers, the T1 cancers arising from the rectum (green color) had an associated unfavorable disease‐free survival in comparison with those arising from the colon (blue color; p = .022) (B). The disease‐free survival was not different between primary surgery (blue color) and additional surgery (green color), and the p value was .61 (C).Abbreviations: LNM(−), without lymph node metastasis; LNM(+), with lymph node metastasis.