352 chapter 5 Table 3. Differences in SUV metrices between malignant/borderline and benign nodules Malignant/ Borderline Benign p All (n=123) n=33 n=90 SUVmax nodule, g/mL 8.3 (3.6-16.3) 3.4 (2.3-7.3) <0.001 SUVpeak nodule, g/mL 6.1 (2.8-12.6) 2.9 (1.9-5.6) <0.001 SUVmax thyroid background, g/mL 1.8 (1.7-2.2) 2.0 (1.8-2.5) 0.17 SUVmax-ratio 4.0 (1.9-8.8) 1.7 (1.1-3.2) <0.001 SUVpeak ratio 3.3 (0.9-2.5) 1.3 (0.9-2.5) <0.001 Non-Hürthle cell nodules, AUS/FLUS + FN/SFN (n=94) n=24 n=70 SUVmax nodule, g/mL 5.8 (3.3-15.2) 3.1 (2.3-4.7) <0.001 SUVpeak nodule, g/mL 4.5 (2.5-10.9) 2.5 (1.9-3.9) 0.002 SUVmax thyroid background, g/mL 1.9 (1.7-2.4) 2.0 (1.8-2.5) 0.22 SUVmax-ratio 2.5 (1.6-8.1) 1.5 (1.0-2.5) <0.001 SUVpeak-ratio 2.1 (1.2-5.3) 1.2 (0.9-1.9) 0.001 AUS/FLUS (n=55) n=10 n=45 SUVmax nodule, g/mL 5.7 (3.1-10.4) 3.3 (2.2-6.8) 0.10 SUVpeak nodule, g/mL 4.0 (2.4-8.5) 2.9 (1.8-4.8) 0.16 SUVmax thyroid background, g/mL 1.8 (1.7-2.1) 2.0 (1.8-2.6) 0.24 SUVmax-ratio 2.2 (1.6-6.4) 1.5 (1.1-3.0) 0.03 SUVpeak-ratio 1.5 (1.3-5.3) 1.3 (0.9-2.3) 0.06 FN/SFN (n=39) n=9 n=20 SUVmax nodule, g/mL 7.9 (3.4-16.1) 2.9 (2.2-4.0) 0.001 SUVpeak nodule, g/mL 7.1 (2.4-12.1) 2.3 (1.9-3.1) 0.003 SUVmax thyroid background, g/mL 2.0 (1.6-2.5) 2.0 (1.9-2.4) 0.55 SUVmax-ratio 2.5 (1.6-8.8) 1.2 (1.0-1.8) <0.001 SUVpeak-ratio 2.1 (1.2-6.9) 1.0 (0.9-1.5) 0.004 Hürthle cell nodules, HCN/SHCN (n=29) n=9 n=20 SUVmax nodule, g/mL 12.3 (8.0-28.4) 12.2 (5.0-35.3) 0.80 SUVpeak nodule, g/mL 9.9 (6.1-24.0) 7.3 (4.0-22.5) 0.42 SUVmax thyroid background, g/mL 1.8 (1.6-2.1) 1.9 (1.6-2.5) 0.66 SUVmax-ratio 7.4 (4.7-14.3) 6.3 (2.7-10.9) 0.39 SUVpeak-ratio 5.9 (3.8-11.4) 4.1 (2.2-8.3) 0.10 AUS/FLUS, atypia of undetermined significance or follicular lesions of undetermined significance. CI, confidence interval. FN/SFN, (suspicious for a) follicular neoplasm. HCN/SHCN, (suspicious for a) Hürthle cell neoplasm. SUV, standardized uptake value. SUV values are presented as median (IQR) and compared between groups using the Mann-Whitney U test.
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