Research Article
Pure Well-Differentiated Adenocarcinoma Is a Safe Factor for Lymph Node Metastasis in T1 and T2 Colorectal Cancer: A Pilot Study
Table 1
Clinicopathological characteristics of 115 T2 and 202 T1 colorectal cancers.
| | T2 cancers | T1 cancers |
| | Case numbers | 115 | 202 | | Age, years; mean (range) | 67.8 ± 10.8 (37–85) | 65.8 ± 9.9 (24–88) | | Sex (male/female) %, (n) | 53.9 (62)/46.1 (53) | 57.9 (117)/42.1 (85) | | Tumor size, mm; mean (range) | 29.5 ± 12.8 (12–78) | 21.6 ± 12.3 (5–80) | | Location (colon/rectum) %, (n) | 50.4 (58)/49.6 (57) | 61.9 (125)/38.1 (77) | | Lymphatic invasion, %, (n) | 47.0 (54) | 33.6 (68) | | Venous invasion, %, (n) | 48.9 (59) | 24.2 (49) | | Budding grade 2/3%, (n) | 38.3 (44) | 13.4 (27) | | Poor histology %, (n) | 27.0 (31) | 12.3 (25) | | PWDA %, (n) | 20.0 (23) | 36.1 (73) | | LNM %, (n) | 23.5 (27) | 8.4 (17) |
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PWDA: pure well-differentiated adenocarcinoma; LNM: lymph node metastasis.
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