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Comparison of depth of invasion measured by endoscopic ultrasonography and histology n (%)
| Depth of invasion | EUS | Histology |
| 2nd layer (muscularis mucosa) | 9 (7.5) | 2 (1.7) |
| 3rd layer (submucosa) | 111 (92.5) | 118 (98.3) |
| 4th layer (muscularis propria) | 0 (0) | 0 (0) |
| EUS accuracy | 111 (92.5) |
EUS: Endoscopic ultrasonography.
