School ager with fever and abdominal pain

Genitourinary
CT of acute pyelonephritis and chronic pyelonephritis in the same kidney
Axial CT with contrast of the abdomen (above) shows the left kidney to have a striated nephrogram appearance with multiple wedge-shaped areas of low density in the left kidney. Coronal CT (below) shows the low density areas are in the upper pole of the left kidney. The lower pole of the left kidney is shrunken and scarred.

The diagnosis was acute pyelonephritis in the upper pole of the left kidney and evidence of chronic pyelonephritis in the lower pole of the left kidney.

Published