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Case Reports
. 2022 Nov 1;18(1):184-187.
doi: 10.1016/j.radcr.2022.10.010. eCollection 2023 Jan.

Acute interstitial nephritis manifesting as a persistent nephogram

Lien Van Liedekerke  1 , Roel Beckers  1 , Kenneth Carels  1 , Laurens De Cocker  1
Affiliations
Case Reports

Acute interstitial nephritis manifesting as a persistent nephogram

Lien Van Liedekerke et al. Radiol Case Rep. .

Abstract

We report a case of a 61-year-old woman who presented to the emergency department with high inflammatory parameters and acute renal failure. Marked enlarged kidneys with persistent nephrogram were found on contrast-enhanced computed tomography . Renal biopsy showed acute interstitial nephritis. Acute interstitial nephritis must be included in the differential diagnosis in patients presenting with a persistent nephrogram.

Keywords: Acute interstitial nephritis; Contrast-enhanced computed tomography; Kidney biopsy; Persistent nephrogram.

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Figures

Fig 1
Fig. 1
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.
Fig 2
Fig. 2
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.
See this image and copyright information in PMC

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