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Table 2 Polyp prevalence according to location and size by colonoscopy

From: Age-specific prevalence of serrated lesions and their subtypes by screening colonoscopy: a retrospective study

Polyp histology Subjects Location (%) Size
  10358/28544 Proximal (58.2%) Distal (41.8%) ≤9 mm 10-20 mm >20 mm
Adenoma 7830 (27.4%) 5150 (65.8%) 4904 (62.6%) 7745 (98.9%) 311 (4.0%) 29 (0.4%)
Tubular, low grade 7749 (27.1%) 5139 (66.3%) 4888 (63.1%) 7736 (99.8%) 302 (3.9%) 20 (0.3%)
Tubular, high grade 19 (0.1%) 16 (84.2%) 14 (73.7%) 19 (100%) 1 (5.3%) 1 (5.3%)
Villous/tubulovillous 11 (0.03%) 8 (72.7%) 9 (81.8%) 10 (90.9%) 5 (45.5%) 0
Adenocarcinoma 51 (0.2%) 31 (60.8%) 42 (82.4%) 35 (68.6%) 21 (41.2%) 19 (37.3%)
Serrated lesions 4312 (15.1%) 2241 (52.0%) 3444 (79.9%) 4309 (99.9%) 166 (3.8%) 9 (0.2%)
Hyperplastic 4187 (14.7%) 2141 (51.1%) 3395 (81.1%) 4185 (99.9%) 162 (3.9%) 9 (0.2%)
Sessile serrated adenoma 143 (0.5%) 123 (86.0%) 66 (46.2%) 142 (99.3%) 9 (6.3%) 0
Traditional serrated adenoma 17 (0.1%) 10 (58.8%) 14 (82.4%) 17(100%) 2 (11.8%) 0
Carcinoid 26 (0.1%) 4 (15.4%) 25 (96.2%) 24 (92.3%) 1 (3.8%) 1 (3.8%)