PMC9633567_01
Paracoronal (left) and axial (right) abdominal contrast-enhanced images in the nephrographic phase show diffusely enlarged kidneys. There is bilateral fat infiltration and fluid in the pararenal loges. The contour of the renal capsule is intact and regular without wall thickening.
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However, the nephrographic phase of the contrast-enhanced abdominal CT revealed marked enlargement of both kidneys (Fig. 1).
Coronal (left) and axial (right) abdominal contrast-enhanced images in the delayed phase show homogeneous contrast media retention in both kidneys, known as a persistent nephrogram. Renal contours are unsharply delineated due to limited motion artefacts. The bladder is completely filled with contrast.
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A delayed phase scan performed 1 h after intravenous contrast administration showed contrast media retention in both kidneys, also known as a persistent nephrogram (Fig. 2).