Table 1.
Summary of polyp characteristics in the two datasets
| UCL polyp perception database (still images) | UCL subtle video dataset |
|---|---|
| 25 polyps | 39 polyps |
| Mean size = 10.0 ± 7.3 mm | Mean size = 10.2 ± 7.3 mm |
| Paris classification † | Paris classification ‡ |
| Flat/flat elevated 72% (18) | Flat/flat elevated 69% (27) |
| Protruded 28% (7) | Protruded 31% (12) |
| Location | Location |
| Right 76% (19) | Right 77% (30) |
| Left 20% (5) | Left 18% (7) |
| Rectum 4% (1) | Rectum 5% (2) |
| Pathology | Pathology |
| LGD adenoma 52% (13) | LGD adenoma 46% (18) |
| SSL (no dysplasia) 44% (11) | SSL (no dysplasia) 54% (21) |
|
SSL (LGD dysplasia) 4% (1) Advanced colorectal polyp 40% (10) |
Advanced colorectal polyp 36% (14) |
†
LST‐NG‐F (IIa) = 1; LST‐NG‐PD (IIa + IIc) = 1; LST‐G‐H (IIa) = 1.
‡
LST‐NG‐F (IIa) = 4; LST‐G‐H (IIa) = 1; LST‐G‐M (IIa + Is) = 1.
Advanced colorectal polyps are defined using the British Society of Gastroenterology post‐polypectomy surveillance guidelines. 16 This includes adenomas > 10 mm, adenomas with high‐grade dysplasia, serrated polyp > 10 mm, and serrated polyp with dysplasia.
LGD, low‐grade dysplasia; SSL, sessile serrated lesion.