Table 2. Characteristics of the included articles.
| Approach | Ageyr | Comorbid disease N (%) | Follow-up duration, months | Size of tumor cm | Histologic type N (%) | Depth of invasion N (%) | Location of tumor N (%) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Reference | median | mean±SD, | differentiated | undifferentiated | mucosa | submucosa | upper | middle | lower | |||
| Chiu et al [30] | ESD | 66.3±12.3 | 18(24.3) | 27.0 | 1.9±0.5 | 66(89.2) | 8(10.8) | |||||
| gastrectomy | 67.0±12.8 | 25(62.5) | 77.6 | 2.5±0.8 | 19(47.5) | 21(52.5) | ||||||
| Kim et al [31] | ESD | 62.0±10.3 | 76.7 | 127(89.4) | 15(10.6) | 135(95.1) | 7(4.9) | 9(6.3) | 65(45.8) | 68(47.9) | ||
| gastrectomy | 56.7±12.0 | 65.5 | 54(76.1) | 17(23.9) | 62(87.3) | 9(12.7) | 8(11.3) | 1(1.4) | 62(87.3) | |||
| Etoh et al [32] | EMR | 84.2 | 34(69.4) | 57 | 1.3±0.6 | 44(89.8) | 5(10.2) | 39(79.6) | 10(20.4) | |||
| gastrectomy | 82.2 | 25(56.8) | 57 | 2.8±0.5 | 40(90.9) | 4(9.1) | 15(34.1) | 29(65.9) | ||||
| Choi et al [33] | EMR | 59.3±9.1 | 69(40.1) | 81 | 1.6±1.0 | 156(90.7) | 16(9.3) | 172(100) | 0(0) | 11(6.4) | 41(23.8) | 120(69.8) |
| gastrectomy | 58.4±10.3 | 126(33.3) | 88 | 1.7±1.1 | 342(90.2) | 37(9.8) | 379(100) | 0(0) | 25(6.6) | 93(24.5) | 261(68.9) | |
| Kim et al [34] | ER | 62.0±17.8 | 62(37.5) | 49.2 | 2.5±0.9 | 156(94.5) | 9(5.5) | 130(78.8) | 35(21.2) | 10(6.1) | 24(14.5) | 131(79.4) |
| gastrectomy | 60.0±11.9 | 135(46.1) | 59.3 | 3.0±1.2 | 261(89.4) | 31(10.6) | 250(85.6) | 42(14.4) | 21(7.2) | 42(14.4) | 229(78.4) | |
| Najmeh et al [35] | ESD | 68.3±11.3 | 2.0±0.7 | |||||||||
| gastrectomy | 72.0±8.8 | 3.8±2.1 | ||||||||||
ER, endoscopic resection
ESD, endoscopic submucosal dissection
EMR, endoscopic mucosal resection
SD, standard deviation
Differentiated type denotes well-differentiated or moderately differentiated adenocarcinoma Undifferentiated type denotes poorly differentiated adenocarcinoma or signet ring-cell carcinoma.