Table 1.
Endoscopic and histologic findings in 242 elderly patients
| Variables | |
|---|---|
| Number of lesions, n (%) | |
| Single | 166 (68.6) |
| Multiple | 76 (31.4) |
| Location of lesion, n (%) | |
| Upper 1/3 | 28 (11.5) |
| Mid 1/3 | 78 (32.2) |
| Lower 1/3 | 136 (56.2) |
| Macroscopic appearance, n (%) | |
| Flat/depressed | 67 (27.7) |
| Elevated | 175 (72.3) |
| Histologic findings, n (%) | |
| Low-grade dysplasia | 124 (51.2) |
| Carcinoma in situ or adenocarcinoma | 112 (46.3) |
| Other | 6 (2.5) |
| Method of endoscopic resection, n (%) | |
| EMR | 100 (41.3) |
| ESD | 142 (58.7) |
| Mean procedure time, min, mean ± SD | 34.9 ± 23.7 |
| Method of Sedation | |
| Midazolam + Propofol+ Pethidine | 215 (88.8) |
| Midazolam + Pethidine | 27 (11.2) |
| Dose of sedative agents, mean ± SD | |
| Midazolam, mg | 3.43 ± 1.16 |
| Propofol, mg | 112.0 ± 88.0 |
EMR endoscopic mucosal resection, ESD endoscopic submucosal dissection, SD standard deviation