Kidney CT Appearances
Medullary Sponge Kidney CT Findings
- Contrast collections associated with urolithiasis or medullary calcinosis
- Paintbrush-like appearance of multiple discrete linear densities (2-3mm in diameter) in the pyramid
- Should not be confused with indistinct normal papillary “blush” due to normal concentration of contrast
- Associated with stone disease, hematuria
- Can involve only one, a few, or all of the calyces
- Bilateral in 60-80% of cases
Other Information About Medullary Sponge Kidney
Etiology:
- Unknown
Epidemiology:
- More common in females
Presentation:
- Asymptomatic
Prognosis:
- Medullary Sponge Kidney is benign but can lead to urinary and renal issues
Related Pearls: Medullary Sponge Kidney
Related Lectures:
CT of Calyceal Abnormalities in the Kidney: Pearls and Pitfalls - Part 1