Patient (n=325) | Male gender, n (%) | 198 (60.9) |
Age in years, median (IQR) | 69 (63–75) | |
LNPCP (n=343) | Location | |
Proximal colon | 181 (52.8) | |
Distal colon | 78 (22.7) | |
Rectum | 84 (24.5) | |
Size in mm, median (IQR), range | 30 (25–40), 20–120 | |
Histology | ||
Non-invasive polyps | ||
Adenoma | ||
LGD | 226 (65.9) | |
HGD | 55 (16.0) | |
SSA/P or TSA | ||
Without dysplasia | 5 (1.5) | |
With dysplasia | 7 (2.1) | |
Hamartoma* | 1 (0.3) | |
Invasive polyps | ||
T1 CRC | 36 (10.5) | |
Superficial submucosal invasion | 11 (3.2) | |
Deep submucosal invasion | 19 (5.5) | |
Invasion depth unable to determine | 6 (1.7) | |
T2 CRC | 7 (2.0) | |
T3 CRC | 4 (1.2) | |
No histology available† | 2 (0.6) |
Some patients had more than one LNPCP resulting that the number of patients and LNPCPs do not match.
*Excluded from the analyses as this is a distinct polyp category.
†In two patients, the polyp was not removed due to comorbidity resulting that no histology was available. These LNPCPs were excluded from further analyses.
CRC, colorectal cancer; HGD, high-grade dysplasia; LGD, low-grade dysplasia; LNPCP, large non-pedunculated colorectal polyp; SSA/P, sessile serrated adenoma/polyp; TSA, traditional serrated adenoma.