Table 3.
Clinicopathologic features of mucosa-confined early gastric carcinoma according to histological type n (%)
| Variable | MT, n = 17 | Pure U, n = 49 | Pure D, n = 99 | P value | P (Bonferroni corrected) |
| Age (yr) | 0.028 | MT vs PU, 0.525 | |||
| ≤ 60 | 10 (58.8) | 33 (67.3) | 44 (44.4) | MT vs PD, 0.272 | |
| > 60 | 7 (41.2) | 16 (32.7) | 55 (55.6) | PU vs PD, 0.009 | |
| Gender | 0.004 | MT vs PU, 0.151 | |||
| Male | 7 (41.2) | 30 (61.2) | 77 (77.8) | MT vs PD, 0.002 | |
| Female | 10 (58.8) | 19 (38.8) | 22 (22.2) | PU vs PD, 0.034 | |
| Tumor size (cm) | 2.1 ± 1.1 | 1.9 ± 1.2 | 1.9 ± 1.2 | 0.802 | |
| Location | 0.003 | MT vs PU, 0.759 | |||
| U | 1 (5.9) | 4 (8.2) | 29 (29.3) | MT vs PD, 0.042 | |
| M/L | 16 (94.1) | 45 (91.8) | 70 (70.7) | PU vs PD, 0.004 | |
| Gross type | < 0.001 | MT vs PU, 0.507 | |||
| Elevated | 4 (23.5) | 8 (16.3) | 51 (51.5) | MT vs PD, 0.033 | |
| Flat/depressed | 13 (76.5) | 41 (83.7) | 48 (48.5) | PU vs PD, < 0.001 | |
| Ulcer | 0.015 | MT vs PU, 0.490 | |||
| Absent | 6 (35.3) | 22 (44.9) | 64 (64.6) | MT vs PD, 0.022 | |
| Present | 11 (64.7) | 27 (55.1) | 35 (35.4) | PU vs PD, 0.022 | |
| H. pylori infection | 0.025 | MT vs PU, 0.015 | |||
| Absent | 1 (5.9) | 18 (36.7) | 22 (22.2) | MT vs PD, 0.119 | |
| Present | 16 (94.1) | 31 (63.3) | 77 (77.8) | PU vs PD, 0.061 | |
| LV invasion | 0.589 | ||||
| Absent | 17 (100.0) | 47 (95.9) | 97 (98.0) | ||
| Present | 0 (0) | 2 (4.1) | 2 (2.0) | ||
| LNM | 0.016 | MT vs PU, 0.739 | |||
| Absent | 14 (82.4) | 42 (85.7) | 96 (97.0) | MT vs PD, 0.012 | |
| Present | 3 (17.6) | 7 (14.3) | 3 (3.0) | PU vs PD, 0.010 |
MT: Mixed-type; PU: Pure undifferentiated; PD: Pure differentiated; U: Upper; M/L: Middle/lower; LV: Lymphovascular; LNM: Lymph node metastasis.