Medullary sponge kidney
Patient with abdominal pain. Lab results show an elevated serum creatinine.
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Diffuse medullary calcifications in both kidneys.
Bilateraly nephrolithiasis and right ureterolithiasis.
Cystic like dilatation of the renal calyces in the right kidney.
Atrophic left kidney.
Medullary sponge kidney is a sporadic condition diagnosed during workup for renal stones.
- urinary tract infection
Clusters of pyramidal medullary calcification are characteristic (nephrocalcinosis).
Differential diagnosis include:
- renal tubular acidosis
- hypervitaminosis D
- milk-alkali syndrome