Diagnostic sensitivity and positive prediction value of malignant diseases was 83.3% and 100%, and diagnostic specificity and negative prediction value of the benign diseases was 100% and 66.7%, respectively. The accuracy was 84.7%.

• 恶性肿瘤的诊断敏感性83.；3%25(45/54)；阳性预测值100%25; 良性病变诊断特异性100%25；阴性预测值66