Variables | Upper third (n = 64, 9.9%) | Middle third (n = 210, 32.6%) | Lower third (n = 370, 57.5%) | P-value |
---|---|---|---|---|
Size (cm) | 2.77 ± 2.09 | 2.96 ± 2.06 | 2.21 ± 1.54 | < 0.001 |
Age (years) | 63.56 ± 12.46 | 60.28 ± 11.70 | 64.24 ± 11.11 | < 0.001 |
Sex | 0.249 | |||
Male | 52 (81.3) | 149 (71.0) | 266 (71.9) | |
Female | 12 (18.8) | 61 (29.0) | 104 (28.1) | |
pT stage | 0.001 | |||
1a | 30 (46.9) | 134 (63.8) | 261 (70.5) | |
1b | 34 (53.1) | 76 (36.2) | 109 (29.5) | |
Gross type | 0.263 | |||
Elevated | 18 (28.1) | 40 (19.0) | 87 (23.5) | |
Flat | 27 (42.2) | 91 (43.3) | 136 (36.8) | |
Depressed | 19 (29.7) | 79 (37.6) | 147 (39.7) | |
Histologic typea | < 0.001 | |||
WD | 29 (46.0) | 67 (32.1) | 168 (46.0) | |
MD | 16 (25.4) | 47 (22.5) | 127 (34.8) | |
PD / Signet ring cell carcinoma | 18 (28.6) | 95 (45.4) | 70 (19.2) | |
Lymphatic invasion | 6 (9.4) | 21 (10.0) | 42 (11.4) | 0.823 |
Venous invasion | 0 (0) | 3 (1.4) | 4 (1.1) | 0.628 |
Perineural invasion | 1 (1.6) | 1 (0.5) | 4 (1.1) | 0.658 |
Adenomatous background | 12 (18.8) | 30 (14.3) | 53 (14.3) | 0.636 |
Lymph node metastasisb | 2 (5.4) | 12 (9.3) | 20 (12.2) | 0.420 |