Figure 1. Intravenous urography in delayed 5 min film shows an exophytic mass from lower pole of right kidney (arrowheads) and a space-occupying lesion at right upper kidney with distorted renal pelvicalyces (arrows).
Figure 2. (a) Dynamic contrast medium enhanced abdominal CT in excretory phase shows a 1.7 cmx1.6 cm space-occupying nodule at right upper renal pelvicalyces with mild contrast medium enhancement (arrows). (b) In the nephrographic phase, another exophytic tumour showing strong enhancement with contrast medium at lower pole of kidney about 3.4 cmx2.7 cm in size, there were hypodense foci and calcified component in this lesion (arrowheads).
Figure 3. Selective right renal arterial angiography shows a hypervascular protruding mass at lower pole of right kidney with enlarged feeding arteries, early filling at arterial phase and pooling of contrast(arrows). Besides a perfusion defect at upper pole (arrowhead), this area was supplied directly by aortic branch and was depicted by aortogram.