Table 3 Diagnostic performance of each conventional ultrasound and Doppler finding to detect malignant nodules (n = 72)
Ultrasound features | Sensitivity % (95% CI) | Specificity % (95% CI) | Accuracy % (95% CI) | PPV % (95% CI) | NPV % (95% CI) |
|---|---|---|---|---|---|
Hypoechoic echopattern | 71.43 (41.9—91.61) | 84.48 (72.58—92.65) | 81.94 (71.11—90.02) | 52.63 (35.88—68.81) | 92.45 (84.16—96.58) |
Taller than wide | 64.29 (35.14—87.24) | 67.24 (53.66—78.99) | 66.67 (54.57—77.34) | 32.14 (21.68—44.76) | 88.64 (79.06—94.16) |
Halo Absent | 85.71 (57.19—98.22) | 81.03 (68.59—90.13) | 81.94 (71.11—90.02) | 52.17 (38.08—65.93) | 95.92 (86.62—98.84) |
Irregular | 57.14 (28.86—82.34) | 86.21 (74.62—93.85) | 80.56 (69.53—88.64) | 50.0 (31.28—68.72) | 89.29 (81.86—93.9) |
Micro-calcification | 78.57 (49.2—96.34) | 96.55 (88.09—99.58) | 93.06 (84.53—97.71) | 84.62 (57.83—95.66) | 94.92 (87.24—98.08) |
Internal Vascularity | 85.71 (57.19—98.22) | 89.66 (78.83—96.11) | 88.89 (79.28—95.08) | 66.67 (47.65—81.46) | 96. 30 (87.78—98.85) |
Total* | 94.2 (73.2–99.8) | 69.89 (59.3- 81.85) | 74.62 (61.7—85.9) | 83.21 (54.5–95.9) | 78.9 (63.7–87.6) |