Allergic Interstitial Nephritis Manifesting as a Striated Nephrogram

Figure 3

Axial fat-saturated T1w 20 second arterial phase contrast enhanced image: there is demonstration of heterogeneous enhancement of the renal cortex. Please note the “striated” appearance of the renal cortex (long arrows) which is also evident on 70-second venous phase and 180-second delayed venous phase imaging. Incidentally, the liver parenchyma also demonstrates heterogeneous enhancement (short arrow), consistent with inflammation.