Table 1.
Clinicopathological characteristics of patients who underwent surgical operation for papillary adenocarcinoma-type early gastric cancers n (%)
| Characteristic | |
| No. of patients | 49 |
| Median age, yr (range) | 66 (48-80) |
| Gender | |
| Male | 35 (71) |
| Female | 14 (29) |
| Location | |
| Upper third | 5 (10) |
| Middle third | 2 (4) |
| Lower third | 42 (86) |
| Macroscopic shape | |
| Elevated | 36 (73) |
| Flat | 0 (0) |
| Depressed | 13 (27) |
| Ulceration | 12 (24) |
| Histologic type | |
| PP type | 28 (57) |
| MP with diff. | 14 (29) |
| MP with undiff. | 7 (14) |
| Median size, mm (range) | 30 (9-105) |
| ≤ 30 | 24 (49) |
| > 30 | 25 (51) |
| Depth of invasion | |
| Mucosa (m1:m2:m3) | 14 (0:0:14) (29) |
| Submucosa (sm1:sm2) | 35 (8:27) (71) |
| Lymphovascular invasion | 15 (31) |
| Lymph node metastasis | 9 (18) |
PP type: Pure papillary type; MP with diff.: Mixed papillary type with differentiated component; MP with undiff.: Mixed papillary type with undifferentiated component.