ARRS Case of the Week


Case Author: Courtney Coursey Moreno, MD, Emory University School of Medicine


24-year-old healthy man who has noticed a left abdominal mass.

Imaging Findings

Axial contrast-enhanced CT images at the level of the upper pole left kidney (A) and slightly more inferiorly (B) show a markedly enlarged left kidney with thickened cortex and loss of expected corticomedullary differentiation. Rounded areas of fat attenuation are present within the left renal parenchyma. The left pelvicaliceal system is minimally prominent. Right kidney appears normal. Coronal reformations centered anterior to (C) and at the level of the aorta (D) show the left kidney measures 23 cm in craniocaudal dimension.


This page is updated with new content weekly. It was last updated on November 18, 2019.

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