Table 1.
Demographic Data of the Patients and Lesions
| Variable | Value (%) |
|---|---|
| Sex | |
| Male | 197 |
| Female | 62 |
| Age, mean±SD, yr | 69.8±9.1 |
| Size of lesion size, median (IQR), mm | 20.0 (3.0–110.0) |
| Macroscopic feature | |
| 0-I | 23 (8.2) |
| 0-IIa | 99 (35.6) |
| 0-IIb | 4 (1.4) |
| 0-IIc | 152 (54.8) |
| Location of the lesion | |
| Upper | 103 (37.1) |
| Middle | 111 (40.0) |
| Lower | 64 (23.0) |
| Position in the gastric wall | |
| Anterior wall | 46 (16.5) |
| Posterior wall | 75 (27.0) |
| Greater curvature | 68 (24.5) |
| Lesser curvature | 89 (32.0) |
| Ulceration (endoscopic) | |
| Positive | 51 (18.3) |
| Negative | 227 (81.7) |
| Ulceration (histological) | |
| Positive | 47 (16.9) |
| Negative | 231 (83.1) |
| Primary treatment | |
| ESD | 154 (55.4) |
| Surgery | 124 (44.6) |
| Histology | |
| Differentiate type | 184 (66.2) |
| Mixed/differentiated predominant | 59 (21.2) |
| Mixed/undifferentiated predominant | 17 (6.1) |
| Undifferentiated type | 18 (6.5) |
| Histological depth of invasion | |
| Mucosal cancer (M) | 119 (42.8) |
| Shallow submucosal invasion (SM1) | 42 (15.1) |
| Deep submucosal invasion (SM2) | 105 (37.8) |
| Invasion to muscularis mucosa (MP) | 12 (4.3) |
We found 278 early gastric cancer lesions with 259 patients available for analysis.
IQR, interquartile range; ESD, endoscopic submucosal dissection.