Table 4.
Detection rates of different histologic types of polyps and cancer by family history
| Histologic type of polyps |
Family history |
Total | |
| No (%) | Yes (%) | ||
| Neoplastic | |||
| Tubular | 26 (76.4) | 8 (23.6) | 34 (100) |
| Tubulo-villous | 13 (68.4) | 6 (31.6) | 19 (100) |
| Villous | 5 (50.0) | 5 (50.0) | 10 (100) |
| Serrated | 2 (40.0) | 3 (60.0) | 5 (100) |
| Adenomatous polyps | 46 (67.6) | 22 (32.4) | 68 (100) |
| Non-neoplastic | |||
| Hyperplastic | 46 (80.7) | 11 (19.3) | 57 (100) |
| Total PDR | 92 (73.6) | 33 (26.4) | 125 (100) |
| Cancer | 0 (0) | 8 (100) | 8 (100) |
| Total | 92 (69.2) | 41 (30.8) | 133 (100) |
PDR: Polyp detection rate.