Fig. 3From: CT and MRI findings of cystic renal cell carcinoma: comparison with cystic collecting duct carcinomaa-e. CCDC of left kidney. a Unenhanced CT scan showed a hypodense mass in the medulla, unclear boundary, and showed an infiltrative appearance (arrow). b, c Mild, heterogeneous enhancement was noted on the cortex and medulla phases (arrow). d The tumors invaded the renal pelvis ureter (arrows). e The tumors cells were tubular and papillary growth pattern (H&E stain; original magnification, ×400)Back to article page