1. CT Urography for the Diagnosis of Medullary Sponge Kidney
Am J Nephrol 2014;39: DOI: /
Fig. 1. Axial contrast-enhanced CT image during the excretory phase shows a papillary brush pattern in the medulla of the left kidney (arrow).
© 2014 S. Karger AG, Basel

2. CT Urography for the Diagnosis of Medullary Sponge Kidney
Am J Nephrol 2014;39: DOI: /
Fig. 2.a Noncontrast axial image at the level of the kidneys demonstrates medullary calcinosis (arrows) in both kidneys. b 3D volume rendered images created from CTU shows the classic ‘bouquet of flowers' pattern (arrows) in the region of the papilla in both kidneys.
© 2014 S. Karger AG, Basel

3. CT Urography for the Diagnosis of Medullary Sponge Kidney
Am J Nephrol 2014;39: DOI: /
Fig. 3. Coronal reformation during the excretory phase showing a papillary brush pattern in the left renal medullary region (arrow).
© 2014 S. Karger AG, Basel

4. CT Urography for the Diagnosis of Medullary Sponge Kidney
Am J Nephrol 2014;39: DOI: /
Fig. 4. Coronal maximum intensity projection during the excretory phase showing medullary cyst (thick arrow) and dilated collecting tubules showing a papillary brush pattern in both kidneys (thin arrows).
© 2014 S. Karger AG, Basel