The differential diagnosis value of contrast-enhanced ultrasound(CEUS)between benign and malignant renal neoplasm

Objective To investigate the differential diagnosis value of contrast-enhanced ultrasound(CEUS)between benign and malignant renal neoplasm.Methods The contrast-enhanced CT,CEUS and conventional US features of 31 cases of renal neoplasm were analyzed retrospectively.Results The CEUS modes of malignant renal neoplasm includedquick in and out(52.4%) andquick in and slow out(47.6%).Most of the malignant tumors demonstrated good enhancement(71.4%)and non-uniform enhancement with defective filling(85.7%).In benign group,the CEUS modes includedquick in and slow out(70%),slow in and out(20%)andquick in and out(10%).Most of them showed fair-poor enhancement(70%)and homogeneous enhancement(60%). There were significant difference between the malignant and benign renal neoplasm in CEUS mode,degree of enhancement and homogeneity of enhancement.There is no significant difference of diagnostic accuracy of contrast-enhanced CT and CEUS(84.6%vs 77.4%).Conclusion CEUS could provide more information to improve the diagnostic accuracy for renal neoplasm,and had important value in differential diagnosis between benign and malignant neoplasm.