Table 2.
Tissue characteristics, by age group.
| 40–44 Years (N = 68) | 45–49 Years (N = 216) | 50–64 Years (N = 254) | |
|---|---|---|---|
| Case status | |||
| CRC | 32 (47.1%) | 88 (40.7%) | 91 (35.8%) |
| Advanced adenoma | 0 (0%) | 52 (24.1%) | 71 (28.0%) |
| Normal colorectum | 36 (52.9%) | 76 (35.2%) | 92 (36.2%) |
| Anatomic subsite | |||
| Proximal | 50 (73.5%) | 162 (75.0%) | 183 (72.0%) |
| Distal | 17 (25.0%) | 46 (21.3%) | 64 (25.2%) |
| Whole colon | 1 (1.5%) | 8 (3.7%) | 7 (2.8%) |
| CRC size, cm | |||
| Median (Q1, Q3) | 4.75 (3.35, 6.35) | 3.00 (1.50, 5.00) | 2.20 (1.40, 4.00) |
| Range | 1.20–8.60 | 0.40–10.00 | 0.60–20.00 |
| CRC grade, n (%) | |||
| 2 | 0 (0.0%) | 3 (3.5%) | 2 (2.2%) |
| 3 | 26 (81.2%) | 60 (69.8%) | 64 (71.9%) |
| 4 | 6 (18.8%) | 23 (26.7%) | 23 (25.8%) |
| CRC stage, n (%) | |||
| I | 7 (10.3%) | 14 (6.5%) | 24 (9.4%) |
| II | 6 (8.8%) | 15 (6.9%) | 20 (7.9%) |
| III | 12 (17.6%) | 40 (18.5%) | 29 (11.4%) |
| IV | 6 (8.8%) | 18 (8.3%) | 17 (6.7%) |
| % Neoplastic cellsa | |||
| Median (Q1, Q3) | 70.00 (60.00, 70.00) | 60.00 (60.00, 70.00) | 60.00 (60.00, 70.00) |
| Range | 50.00–80.00 | 50.00–100.00 | 50.00–90.00 |
Abbreviation: CRC, colorectal cancer.
a
Colorectal cancer cases only.