Comparison Between Contrast-Enhanced Ultrasound And Enhanced CT In Diagnosis Of Renal Space-Occupying Lesions

Objective: Analysis the image features of renal spaceoccupying lesions using contrast-enhanced ultrasound and contrastenhanced CT respectively and combination use of both techniques in diagnosis of renal space-occupying lesions and compare their diagnostic value in renal space- occupying lesions.Methods: From January 2014 to May 2015, a total of 49 patients with 50 renal space-occupying lesions treated in the first people’s Hospital of Chenzhou City were included in the study, of which 39 were malignant and 11 were benign. Color doppler ultrasound, contrast-enhanced ultrasound and contrast-enhanced CT were performed before operation. Surgery and pathological examination findings were used as gold standard for diagnosis of renal space-occupying lesions. Analysis the image features of renal space-occupying lesions using contrast-enhanced ultrasound and contrast-enhanced CT. Compare the sensitivity, specificity and accuracy of the techniques respectively and combination use of both techniques in diagnosis of renal space-occupying lesions.Result:Malignant lesions were diagnosed as renal cell carcinoma(38/39), hamartoma(1/39) and benign lesions were diagnosed as benign lesions(7/11), renal space-occupying lesions(1/11) and renal cell carcinoma(4/11) by contrast-enhanced ultrasound.While malignant lesions were diagnosed as renal cell carcinoma(34/39), renal space-occupying lesions(2/39), benign lesions(1/39), hamartoma(1/39) and multilocular cystic nephroma(1/39) and benign lesions were diagnosed as benign lesions(6/11), renal space-occupying lesions(1/11) and renal cell carcinoma(4/11) by contrast-enhanced CT.While malignant lesions were diagnosed as renal cell carcinoma(38/39), renal space-occupying lesions(1/39) and benign lesions were diagnosed as benign lesions(9/11), renal space-occupying lesions(1/11) and renal cell carcinoma(1/11) by combination use of both techniques.The sensitivity, specificity, accuracy, positive predictive value and negative predictive value for diagnosing renal space-occupying lesions were 97.4%, 63.6%, 90.0%, 90.5%, 87.5% by contrast-enhanced ultrasound, 87.2%, 54.5%, 80.0%, 87.2%, 54.5% by contrast-enhanced CT and 97.4%, 81.8%, 94.0%, 95.0%, 90.0% by combination use of both techniques, respectively.Conclusions: Contrast-enhanced ultrasound and enhancement CT in kidney three basic similar qualitative diagnostic accuracy.Combination use of both techniques can improve kidney placeholder lesions qualitative diagnostic accuracy.