Presentation
Right flank pain. Recent ureteral colic on the right.
Patient Data
Age: 40 years
Gender: Male
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Nephrographic-excretory images shows multiple filling defect with smooth margins and regular shape in all calyxs bilaterally.
Note the presence of a few minute calcific stones in the right kidney and a tiny left renal cortical cyst.
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Key images in the coronal and sagittal planes
Case Discussion
Prominent renal papilla are a benign anatomical variant, simulating a filling defect in the excretory phase. The conservation of the shape of the fornix, the smooth contours and the frequent presence of multiple similar aspects differentiate it from a neoplasm.