3D computed tomography (CT) and CT angiography (CTA) for renal mass, performed on multidetector CT scanner. Coronal oblique reformatted image with volume rendering shows a small enhancing mass (M) in the lower pole of the left kidney. The kidney has 2 renal arteries (arrows). The lower one, which serves the tumor, is the primary artery. 69-year-old male with solitary kidney and indeterminate lesion on prior CT. Source: Chapter 6. Radiology of the Urinary Tract, Smith & Tanagho's General Urology, 18e Citation: McAninch JW, Lue TF. Smith & Tanagho's General Urology, 18e; 2013 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/mcan18/mcan18_c006f031.png&sec=41088947&BookID=508&ChapterSecID=41088083&imagename= Accessed: October 14, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved