From: Safety of expanded criteria for endoscopic resection of early gastric cancer in a Western cohort
 | Extended indications group (n = 58) | Exceeding extended indications group (n = 139) | p value |
---|---|---|---|
Age (mean ± SD) | 65.7 ± 11.3 | 65.2 ± 12.7 | 0.438 |
Gender | |||
 Male | 34 (58.6%) | 71 (51.1%) | 0.352 |
 Female | 24 (41.4%) | 68 (48.9%) | |
Histology | |||
 Differentiated | 40 (70.2%) | 52 (37.4%) | 0.001 |
 Undifferentiated | 17 (29.8%) | 87 (62.6%) | |
No. of retrieved lymph nodes (mean ± SD) | 20.7 ± 10.8 | 19.0 ± 7.1 | 0.212 |
Tumor invasion | |||
 Mucosal | 44 (75.5%) | 34 (24.5%) | 0.001 |
 Submucosal | 14 (24.1%) | 105 (75.5%) | |
Lymph node metastasis | |||
 LNM+ | 1 (1.7%) | 42 (30.2%) | 0.001 |
 LNM- | 57 (98.3%) | 97 (69.8%) | |
Ulceration | |||
 UL+ | 8 (13.8%) | 70 (50.3%) | 0.001 |
 UL- | 50 (86.2%) | 69 (49.7%) | |
Lymphovascular invasion | |||
 LV+ | 0 (0%) | 31 (22.3%) | 0.001 |
 LV- | 58 (100%) | 108 (77.7%) | |
Tumor size | |||
  < 2 cm | 34 (58.6%) | 41 (29.4%) | 0.001 |
 2–3 cm | 16 (27.6%) | 49 (35.3%) | |
  > 3 cm | 8 (13.8%) | 49 (35.3%) |