Multi-slice helical CT scanning in differential diagnosis of renal clear cell carcinoma and renal papillary carcinoma / 第二军医大学学报

ABSTRACT

Objective:To evaluate the value of multi-slice computed tomography(CT) in differential diagnosis of renal clear cell carcinoma and renal papillary carcinoma.Methods: The CT images of 47 patients with renal cell carcinoma(RCC) were reviewed.The RCC patients were divided into 2 groups pathologically,including 37 cases of clear cell RCC and 10 cases of papillary RCC.Plain scan and three phase(corticomedullary,nephrographic and excretory phases) CT were performed in all patients.Age and sex of patients,tumor size,enhancement degree and pattern(homogeneous,heterogeneous and predominantly peripheral),the presence of calcification or cystic degeneration(necrotic or hemorrhagic areas within the tumor) and tumor spreading(including perinephric change,venous invasion and lymphadenopathy) were compared between the 2 subtypes.Results: The degrees of enhancement were significantly different between the 2 subtypes in the corticomedullary,parenchymal and excretory phases(P