Accuracy rates of invasion depth staging of early gastric cancer by endoscopy and 20 MHz endoscopic ultrasonography (EUS)
| Endoscopy | EUS | ||||||
|---|---|---|---|---|---|---|---|
| Mucosal | Submucosal | Mucosal | Submucosal | Advanced | |||
| Histopathology | |||||||
| Mucosal (33) | 22 | 11 | 21 | 12 | 0 | ||
| Submucosal (17) | 6 | 11 | 1 | 15 | 1 | ||
| Advanced (2) | 0 | 2 | 0 | 1 | 1 | ||
| Total accuracy (%) | 63 | 71 | |||||
| Understaged (%) | 15 | 4 | |||||
| Overstaged (%) | 21 | 25 | |||||
n = 52. Causes of staging errors (under or over) differed significantly between endoscopy and EUS (p<0.05). EUS tended to overstage the invasion depth.