Table 4.
Comparison of lesion characteristics between SSL and SSLD.
| SSLD T1 with SSL | SSL | p value | |
|---|---|---|---|
| Lesion number | 38 | 290 | |
| Patient number | 20 | 181 | |
| Age, mean ± SD (range) | 67.2 ± 14.8 (28-85) | 65.0 ± 12.6 (25-83) | 0.533 |
| Sex, % (n) male/female | 50/50 (10/10) | 39.8/60.2 (72/109) | 0.576 |
| Lesion size (mm), mean ± SD (range) | 17.8 ± 10.5 (3-50) | 11.4 ± 8.7 (2-50) | <0.001 |
| Lesion size, % (n) (≤5, 6-10, 11-20, ≥21) | 10.5/23.7/34.2/31.6 (4/9/13/12) | 31.7/29.7/27.9/10.7 (92/86/81/31) | |
| Location, % (n) C/A/T/D | 28.9/39.5/26.3/5.3 (11/15/10/2) | 26.2/35.5/31.0/7.2 (76/103/90/21) | 0.879 |
| Morphology, % (n) polypoid/non-polypoid | 10.5/89.5 (4/34) | 10.3/89.7 (30/260) | 0.580 |
| Method of observation (NBI/BLI/NBI and BLI) | 16/12/10 | 158/112/20 | |
|
| |||
| WLI endoscopic findings | |||
| Granular elevation | 26.3 (10) | 1.7 (5) | <0.001 |
| Depression | 18.4 (7) | 2.1 (6) | <0.001 |
| Redness | 23.7 (9) | 0.7 (2) | <0.001 |
| Either of 3 findings | 47.4 (12) | 4.1 (12) | <0.001 |
|
| |||
| NBI/BLI endoscopic findings | |||
| ECO (overall) | 100 (38) | 96.2 (279) | 0.252 |
| TBV (overall) | 81.6 (31) | 84.8 (246) | 0.634 |
| Either of ECO or TBV | 100.0 (38) | 98.6 (286) | 0.951 |
| WDC (overall) | 66.4 (26) | 8.6 (25) | <0.001 |
| NV (overall) | 55.3 (21) | 1.4 (4) | <0.001 |
| Either of WDC or NV | 86.8 (33) | 9.0 (26) | <0.001 |
SD: standard deviation; SSL: sessile serrated lesions; SSLD: SSL with dysplasia; NBI: narrowband imaging; BLI: blue laser/light imaging; C: cecum; A: ascending colon; T: transverse colon; D: descending colon; HP: hyperplastic polyp; ECO: expanded crypt opening; TBV: thick and branched vessels; NV: network vessels; WDC: white dendritic change.