Table 3.

Number and size of the adenomas according to fecal immunochemical test (100 ng/mL) result and location

Number of adenomas per patientNumber of adenomas distal to splenic flexureNumber of adenomas proximal to splenic flexure
Adenoma's characteristicsFecal hemoglobin concentrationMean ± SDP valueMean ± SDP valueMean ± SDP value
Maximum size (mm)<100 ng/mL (n = 413)6.22 ± 4.2<0.0014.23 ± 3.94<0.0012.75 ± 4.230.2
≥100 ng/mL (n = 61)14.11 ± 912.52 ± 8.154.23 ± 9.31
Adenomas (no.)<100 ng/mL (n = 413)1.79 ± 1.490.0021.11 ± 1.110.0010.68 ± 1.230.3
≥100 ng/mL (n = 61)3.03 ± 2.932.07 ± 2.050.97 ± 2.16
Advanced adenomas (no.)a<100 ng/mL (n = 413)0.3 ± 0.58<0.0010.19 ± 0.46<0.0010.1 ± 0.370.3
≥100 ng/mL (n = 61)1.1 ± 1.530.84 ± 0.970.26 ± 1.21
Villous histology (no.)<100 ng/mL (n = 413)0.1 ± 0.340.010.07 ± 0.280.0030.03 ± 0.170.2
≥100 ng/mL (n = 61)0.33 ± 0.650.2 ± 0.520.13 ± 0.62
High-grade dysplasia (no.)<100 ng/mL (n = 413)0.08 ± 0.350.050.06 ± 0.280.0330.02 ± 0.150.8
≥100 ng/mL (n = 61)0.18 ± 0.390.16 ± 0.370.02 ± 0.13
Flat adenomas (no.)b<100 ng/mL (n = 413)0.5 ± 1.010.30.3 ± 0.690.0050.2 ± 0.750.5
≥100 ng/mL (n = 61)0.36 ± 1.150.1 ± 0.470.26 ± 0.85
Flat advanced adenomas (no.)<100 ng/mL (n = 413)0.07 ± 0.30.90.02 ± 0.180.60.04 ± 0.240.8
≥100 ng/mL (n = 61)0.07 ± 0.310.02 ± 0.130.05 ± 0.28
Sessile adenomas (no.)b<100 ng/mL (n = 413)0.99 ± 1.210.30.57 ± 0.870.10.41 ± 0.810.6
≥100 ng/mL (n = 61)1.26 ± 2.110.9 ± 1.870.36 ± 0.8
Sessile advanced adenomas (no.)<100 ng/mL (n = 413)0.11 ± 0.390.40.07 ± 0.310.40.04 ± 0.210.7
≥100 ng/mL (n = 61)0.16 ± 0.490.11 ± 0.410.05 ± 0.28
Pedunculated adenomas (no.)b<100 ng/mL (n = 413)0.27 ± 0.52<0.0010.21 ± 0.48<0.0010.06 ± 0.250.2
≥100 ng/mL (n = 61)1.38 ± 2.011.03 ± 1.030.34 ± 1.82
Pedunculated advanced adenomas (no.)<100 ng/mL (n = 413)0.11 ± 0.34<0.0010.09 ± 0.32<0.0010.02 ± 0.140.3
≥100 ng/mL (n = 61)0.85 ± 1.460.69 ± 0.850.16 ± 1.16

NOTE: Quantitative variables are expressed as mean and standard deviation (SD). Differences between quantitative variables were analyzed with Student t test. Differences with P < 0.05 are considered statistically significant.

  • aAdvanced adenoma: adenoma >1 cm in size or with high-grade dysplasia or with villous component (>20%).

  • bAdenoma morphology was classified according to Paris classification.