Fig. 2From: CT differentiation of the oncocytoma and renal cell carcinoma based on peripheral tumor parenchyma and central hypodense area characterisation Persistent low sign of ccRCC in a 60-year-old female . a–c The CMP, NP and EP images show a focal hypodensity at the same location of PTP (arrows), except for CHA. CMP Corticomedullary phase, ccRCC Clear cell renal cell carcinoma, CHA Central hypodense area, EP Excretory phase, NP Nephrographic phase, PTP Peripheral tumor parenchymaBack to article page