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Figure 3: Intra venous pyelogram: (Delayed films) White arrowheads showing accumulation of contrast agent in the ectatic renal collecting tubule in the pyramids and linear striations of contrast material radiating outward from the calyces (paintbrushlike appearance); black arrow heads showing the papillary blush

Figure 3: Intra venous pyelogram: (Delayed films) White arrowheads showing accumulation of contrast agent in the ectatic renal collecting tubule in the pyramids and linear striations of contrast material radiating outward from the calyces (paintbrushlike appearance); black arrow heads showing the papillary blush