“ Dysplastic dilatation of the papillary collecting tubules leading to papillary urinary stasis, stones and infection . Usually bilateral an...
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Dysplastic dilatation of the papillary collecting tubules leading to papillary urinary stasis, stones and infection. Usually bilateral and symmetrical and does not progress to renal failure—asymptomatic. In total, >80% get medullary nephrocalcinosis.
CT
• Bilateral medullary calcification
• ‘Paintbrush’ appearance with contrast—contrast in dilated tubules.
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