Table 3.
Relationship of narrow-band imaging findings to colorectal tumor tissue architecture
| Variable | Classification1 |
Tissue architecture |
||||||
| Lining epithelium degeneration/ prolapse | Glandular duct arrangement | Superficial differentiation | Superficial desmoplastic reaction | Muscularis mucosae | Granuloma formation | |||
| Surface pattern | Visible/Invisible | Tubular | a | a | a | a | a | a |
| Papillary | b | c | c | a | a | a | ||
| Clarity | Tubular | a | a | c | c | a | a | |
| Papillary | a | a | c | n.a. | a | a | ||
| Regular/Irregular | Tubular | a | a | b | c | a | b | |
| Papillary | a | a | c | n.a. | a | a | ||
| Vascular pattern | Disturbed arrangement | Tubular | a | a | a | a | a | a |
| Papillary | a | a | b | c | a | a | ||
| Disrupted vessels | Tubular | a | a | c | a | a | a | |
| Papillary | a | a | c | a | a | a | ||
| Varying caliber | Tubular | a | a | c | a | a | b | |
| Papillary | c | c | c | a | b | b | ||
| Size irregularity | Tubular | a | a | a | a | a | a | |
| Papillary | a | a | b | c | a | a | ||
| Thick vessels | Tubular | a | a | b | a | a | c | |
| Papillary | a | c | c | c | c | b | ||
| Avascular area | Tubular | a | a | a | a | a | a | |
| Papillary | c | c | c | b | c | c | ||
| Vessel meandering | Tubular | c | c | c | c | c | c | |
| Papillary | a | b | c | c | a | a | ||
1
Colorectal lesions were classified into tubular and papillary types based on narrow-band imaging observations of the histopathologic appearances and proliferation patterns. aP < 0.05; 0.05 < bP < 0.1; cP > 0.1. n.a.: Not available.