CT Differentiation of Infiltrating Renal Cell Carcinoma and Renal Urothelial Tumor.
10.3348/jkrs.1994.31.6.1137
- Author:
Moon Gyu LEE
;
Yong Ho AUH
;
Kyoung Sik CHO
;
Dong Erk GOO
;
Sun Woo BANG
;
Hyo Kyeong CHOI
- Publication Type:Original Article
- MeSH:
Carcinoma, Renal Cell*;
Diagnosis;
Hydronephrosis
- From:Journal of the Korean Radiological Society
1994;31(6):1137-1141
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: It may be difficult to differentiate renal cell carcinoma involving collecting system from renal urothelial tumor invading into renal parenchyma. The purpose of this study was to assess the differences of CT findings between two conditions. MATERIALS AND METHODS: CT findings of 5 cases of renal cell carcinoma involving the renal collecting systems and 10 cases of renal urothelial tumors invading the renal parenchyma were compared, and analyzed about the presence or absence of hydronephrosis, normal or abnormal CT nephrogram, renal contour changes due to mass and tentative diagnosis. The diagnoses were confirmed at surgery. RESULTS: Renal cell carcinoma showed hydronephrosis in only 20% and normal CT nephrogram and outward contour bulging in all cases. In contrast, renal urothelial tumor showed hydronephrosis(70%), abnormal CT nephrogram(60%), and preservation of reniform shape(100%). CONCLUSION: Renal contour changes and CT nephrogram may be useful in distinguishing both disease entities.
