Acute pyelonephritis with minimal contralateral ureterohydronephrosis

Case contributed by Dr Ammar Haouimi

Presentation

Renal flank pain with a high fever.

Patient Data

Age: 20 years
Gender: Female

The CTU demonstrates:

  • the right kidney is normal in size and shape with a calyceal microlithiasis (2 mm). The postcontrast images show alternating linear bands of low and high attenuation in a radial pattern extending through the corticomedullary layers in keeping with a striated nephrogram
  • left kidney is normal in size with minimal ureterohydronephrosis. A microlithiasis (3 mm) is noted on non-contrast images as well as on the CTU 3D-VR at the vesicoureteric junction

Case Discussion

CTU features of right acute pyelonephritis with a contralateral minimal ureterohydronephrosis due to a microlithiasis at the vesicoureteric junction.

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