Advances of multidetector computed tomography in the characterization and staging of renal cell carcinoma

Figure 7 The 60-year-old woman with clear cell renal cell carcinoma of the left kidney (stage T1a, grade II). A: Transverse plain computed tomography (CT) image depicts lower pole right renal mass as a focal bulging of the renal contour (arrow), mainly isodense (CT density: 35 HU) to the renal parenchyma; B: Axial multiplanar reformation during the corticomedullary phase clearly shows renal malignancy (arrow) moderately and heterogeneously enhancing (mean CT density: 60 HU). Heterogeneous contrast enhancement on imaging should always suggest renal malignancy preoperatively.