| IAa (n = 40) | EAb (n = 77) | p-value |
---|---|---|---|
p T stage | |||
 T0 | 2 (5) | 0 (0) | 0.067 |
 T1 | 9 (22.5) | 12 (15.6) |  |
 T2 | 6 (15) | 10 (13) |  |
 T3 | 22 (55) | 40 (51.9) |  |
 T4a | 1 (2.5) | 12 (15.6) |  |
 T4b | 0 (0) | 3 (3.9) |  |
p N stage | |||
 N0 | 30 (75) | 50 (64.9) | 0.25 |
 N1 | 10 (25) | 19 (24.7) |  |
 N2 | 0 (0) | 8 (10.4) |  |
TNM stage | Â | Â | 0.179 |
 Stage 0 | 2 (5) | 0 (0) |  |
 Stage 1 | 9 (22.5) | 21 (27.3) |  |
 Stage 2 | 18 (45) | 29 (37.7) |  |
 Stage 3 | 11 (27.5) | 27 (35.1) |  |
Differentiation, n (%) | Â | Â | 0.456 |
 Well | 6 (15) | 6 (7.8) |  |
 Medium | 30 (75) | 64 (83.1) |  |
 Poor | 4 (10) | 7 (9.1) |  |
Angiolymphatic invasion, n (%) | 9 (22.5) | 18 (23.4) | 0.915 |
Perineural invasion, n (%) | 6 (15) | 19 (24.7) | 0.226 |
Tumor size (cm) | |||
 Width | 3.0 ± 1.8 | 3.5 ± 2.3 | 0.223 |
 Length | 2.7 ± 1.7 | 3.0 ± 1.6 | 0.409 |
Specimen length (cm) | 17.7 ± 5.8 | 17.6 ± 5.9 | 0.951 |
Nearest margin (cm) | 5.0 ± 2.3 | 4.8 ±1.9 | 0.593 |
Harvested lymph nodes (n) | 25.0 ± 10.2 | 32.2 ± 22.3 | 0.058 |