Value of dynamic CT in differential diagnosis of benign or malignant SPNs compared with pathology (n = 34) Pathology Sum Malignant Benign CT Malignant 12 7 19 Benign 0 15 15 Sum 12 22 34 17 Sensitivity 100.0%, specificity 68.2%, positive predictive value 63.2%, negative predictive value 100.0%, accuracy 79.4% 3.3.3.