Table 2 Surveillance colonoscopies
Total (n = 496) | MLH1 (n = 133) | MSH2 (n = 107) | MSH6 (n = 180) | PMS2 (n = 76) | P-value | |
|---|---|---|---|---|---|---|
Lesions detected during surveillance | ||||||
Non-advanced adenoma | 569 (89%) | 167 (87%) | 177 (84%) | 173 (96%) | 50 (94%) | 0.001* |
Advanced adenoma | 69 (11%) | 21 (11%) | 29 (14%) | 13 (7%) | 6 (11%) | 0.225 |
Colorectal carcinoma | 32 (5%) | 15 (8%) | 14 (7%) | 3 (2%) | 1 (2%) | 0.024* |
Location of non-advanced adenoma | 0.518 | |||||
Right-sided | 306 (54%) | 98 (59%) | 87 (49%) | 89 (51%) | 31 (62%) | |
Left-sided | 194 (34%) | 52 (31%) | 67 (38%) | 62 (36%) | 13 (26%) | |
Right and Left- sided | 68 (12%) | 17 (10%) | 23 (13%) | 22 (13%) | 6 (12%) | |
Location of advanced adenomas | 0.089 | |||||
Right-sided | 38 (55%) | 12 (57%) | 12 (41%) | 9 (69%) | 5 (83%) | |
Left-sided | 30 (44%) | 9 (43%) | 17 (59%) | 3 (23%) | 1 (17%) | |
Right and Left- sided | 1 (1%) | 0 (0%) | 0 (0%) | 1 (8%) | 0 | |
Location of CRC | 0.355 | |||||
Right-sided | 23 (70%) | 12 (80%) | 9 (64%) | 2 (67%) | 0 | |
Left-sided | 9 (30%) | 3 (20%) | 5 (36%) | 1 (33%) | 1 (100%) | |