摘要
58-year-old Chinese woman presented with a mass in right renal pelvis incidentally detected by ultrasonography(Fig.1A).No positive signs were found by physical examination,and urinalysis was also normal.Enhanced computed tomography(CT)of abdomen displayed a polycystic mass of 2.3 cm2.1 cm1.6 cm in right sinus renalis(Fig.1B and C)with ample blood perfusion in arterial phase(Fig.1B)and less perfusion in venous phase(Fig.1C).
