Copyright
©The Author(s) 2017.
World J Gastrointest Pathophysiol. Feb 15, 2017; 8(1): 3-10
Published online Feb 15, 2017. doi: 10.4291/wjgp.v8.i1.3
Published online Feb 15, 2017. doi: 10.4291/wjgp.v8.i1.3
Table 1 Patients’ characteristics and colonoscopy findings
| Variable | All (n = 531) |
| Sex | |
| Male, n (%) | 236 (44.4) |
| Female, n (%) | 295 (55.6) |
| Age | |
| Mean years (SD) | 50.3 ± 15.4 |
| Age groups | |
| ≤ 50 yr | 250 (47.1) |
| > 50 yr | 281 (52.9) |
| Family history | |
| Yes | 150 (28.2) |
| No | 381 (71.8) |
| Indication, n (%) | |
| Screening | 120 (22.6) |
| Gastrointestinal bleeding | 90 (17.0) |
| Constipation | 82 (15.5) |
| Diarrhea | 74 (14.0) |
| Abdominal pain | 70 (13.3) |
| Inflammatory bowel disease | 65 (12.2) |
| Others | 29 (5.4) |
| Patients with at least 1 polyp, n (%) | |
| Neoplastic polyps | 68 (54.4) |
| Non-neoplastic polyps | 57 (45.6) |
| Cancer, n (%) | 8 (1.5) |
Table 2 Detection rates of different histologic types of polyps and cancer by gender
| Histologic type of polyps | Gender | Total | |
| Male (%) | Female (%) | ||
| Neoplastic | |||
| Tubular | 18 (53.0) | 16 (47.0) | 34 (100) |
| Tubulo-villous | 13 (68.4) | 6 (31.6) | 19 (100) |
| Villous | 4 (40.0) | 6 (60.0) | 10 (100) |
| Serrated | 3 (60.0) | 2 (40.0) | 5 (100) |
| Adenomatous polyps | 38 (55.9) | 30 (44.1) | 68 (100) |
| Non-neoplastic | |||
| Hyperplastic | 28 (40.6) | 29 (45.3) | 57 (100) |
| Total PDR | 66 (52.8) | 59 (47.2) | 125 (100) |
| Cancer | 5 (62.5) | 3 (37.5) | 8 (100) |
| Total | 69 (51.9) | 64 (48.1) | 133 (100) |
Table 3 Detection rates of different histologic types of polyps and cancer by age
| Histologic type of polyps | Age-groups | Total | |
| ≤ 50 yr | > 50 yr | ||
| Neoplastic | |||
| Tubular | 6 (17.6) | 28 (82.4) | 34 (100) |
| Tubulo-villous | 7 (36.8) | 12 (63.2) | 19 (100) |
| Villous | 3 (30.0) | 7 (70.0) | 10 (100) |
| Serrated | 3 (60.0) | 2 (40.0) | 5 (100) |
| Adenomatous polyps | 19 (28.0) | 49 (72.0) | 68 (100) |
| Non-neoplastic | |||
| Hyperplastic | 19 (33.3) | 38 (66.7) | 57 (100) |
| Total PDR | 38 (30.4) | 87 (69.6) | 125 (100) |
| Cancer | 1 (12.5) | 7 (87.5) | 8 (100) |
| Total | 39 (29.3) | 94 (70.7) | 133 (100) |
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) |
Table 5 Detection rates of different histologic types of polyps by location
| Histologic type of polyps | Location | Total | |
| Proximal colon (%) | Distal colon (%) | ||
| Neoplastic | |||
| Tubular | 10 (26.3) | 28 (73.7) | 38 (100) |
| Tubulo-villous | 9 (40.9) | 13 (59.1) | 22 (100) |
| Villous | 3 (30.0) | 7 (70.0) | 10 (100) |
| Serrated | 3 (37.5) | 5 (62.5) | 8 (100) |
| Adenomatous polyps | 25 (32.0) | 53 (68.0) | 78 (100) |
| Non-neoplastic | |||
| Hyperplastic | 19 (31.7) | 41 (68.3) | 60 (100) |
| Total PDR | 44 (31.9) | 94 (68.1) | 138 (100) |
Table 6 Detection rates of different histologic types of polyps by colonic segments
| Polyps | Location | Total | |||||||
| Ascending colon | Transverse colon | Descending colon | Sigmoid | Rectum | Cecum | Hepatic flexure | Splenic flexure | ||
| Tubular | 3 (7.9) | 5 (13.2) | 4 (10.5) | 7 (18.4) | 16 (42.1) | 1 (2.6) | 1 (2.6) | 1 (2.6) | 38 (100) |
| Tubulo-villous | 4 (18.2) | 3 (13.6) | 2 (9.1) | 6 (27.3) | 5 (22.7) | 2 (9.1) | 0 (0) | 0 (0) | 22 (100) |
| Villous | 0 (0) | 1 (10) | 0 (0) | 2 (20) | 5 (50) | 2 (20) | 0 (0) | 0 (0) | 10 (100) |
| Serrated | 0 (0) | 3 (37.5) | 1 (12.5) | 3 (37.5) | 1 (12.5) | 0 (0) | 0 (0) | 0 (0) | 8 (100) |
| Hyperplastic | 7 (11.7) | 10 (16.7) | 7 (11.7) | 16 (26.7) | 17 (28.3) | 2 (3.3) | 0 (0) | 1 (1.7) | 60 (100) |
| Total | 14 (10.1) | 22 (16.0) | 14 (10.1) | 34 (24.6) | 44 (32.0) | 7 (5.1) | 1 (0.7) | 2 (1.4) | 138 (100) |
Table 7 Detection rates of different histologic types of polyps by size
| Size | Histologic type | Total | ||||
| Hyperplastic | Tubular | Tubul-villous | villous | Serrated | ||
| Small | 11 (44.0) | 0 (0) | 14 (56.0) | 0 (0) | 0 (0) | 25 (100) |
| Medium | 14 (46.7) | 0 (0) | 12 (40.0) | 0 (0) | 4 (13.3) | 30 (100) |
| Large | 0 (0) | 8 (40.0) | 3 (15.0) | 9 (45.0) | 0 (0) | 20 (100) |
| Unknown | 35 (55.6) | 2 (3.2) | 9 (14.3) | 13 (20.6) | 4 (6.3) | 63 (100) |
| Total | 60 (43.5) | 10 (7.2) | 38 (27.5) | 22 (16.0) | 8 (5.8) | 138 (100) |
Table 8 Detection rates of different histologic types of polyps by degree of dysplasia
| Grade | Histologic type | Total | |||
| Tubular | Tubul-villous | Villous | Serrated | ||
| Mild | 21 (51.2) | 11(26.9) | 6 (14.6) | 3 (7.3) | 41 (100) |
| Moderate | 11 (57.9) | 3 (15.8) | 3 (15.8) | 2 (10.5) | 19 (100) |
| Severe | 6 (33.3) | 8 (44.5) | 1 (5.5) | 3 (16.7) | 18 (100) |
| Total | 38 (48.7) | 22 (28.2) | 10 (12.9) | 8 (10.2) | 78 (100) |
- Citation: Asadzadeh Aghdaei H, Nazemalhosseini Mojarad E, Ashtari S, Pourhoseingholi MA, Chaleshi V, Anaraki F, Haghazali M, Zali MR. Polyp detection rate and pathological features in patients undergoing a comprehensive colonoscopy screening. World J Gastrointest Pathophysiol 2017; 8(1): 3-10
- URL: https://www.wjgnet.com/2150-5330/full/v8/i1/3.htm
- DOI: https://dx.doi.org/10.4291/wjgp.v8.i1.3