ABSTRACT
Objective To analyze the diagnostic value of CT for benign and malignant liver nodules in patients with cirrhosis. Methods From April 2015 to April 2018,135 cases of liver cirrhosis with solitary liver nodules in Shanxi Coal Central Hospital were selected,and all patients received the upper abdominal CT examination. The CT manifestations and diagnostic accuracy of the lesions were observed,and positive for hepatocellular carcinoma and negative for other benign nodules. The diagnostic efficacy of CT was analyzed. Results The CT scan of benign and malignant nodules of liver in the background of liver cirrhosis all showed a slight or low density focus,dynamic enhanced scan,the characteristics of hepatocellular carcinoma were obviously strengthened in the arterial phase,the portal phase was relatively low density,the delayed phase of the capsule was strengthened. The focal nodular hyperplasia was characterized by the enhancement of the middle heart scar in the delay period; the angioma was special. The characteristics of the hepatic adenoma were obvious enhancement of the arterial phase,the slow clearance of the portal phase and the delay period,and the enhancement of the liver parenchyma in the stages of the regenerative nodules of the liver cirrhosis. The accuracy of CT in the diagnosis of benign and malignant liver nodules under the background of liver cirrhosis was 90. 4% (122/135),of which the accuracy of diagnosis of hemangioma was the highest[100. 0% (30/30)],and the lowest rate for the diagnosis of regenerative nodules of liver cirrhosis was 81. 1% (30/37). The sensitivity,specificity,positive predictive value, negative predictive value and accuracy of CT for the diagnosis of benign and malignant liver nodules under the background of liver cirrhosis were 92. 1% ,89. 7% ,77. 8% ,96. 7% and 90. 4% ,respectively. Conclusion In the diagnosis of benign and malignant nodules under the background of liver cirrhosis,spiral CT has high diagnostic effect. Dynamic enhanced scan can accurately differentiate most of the lesions.