42-year-old female with abdominal pain after karate kick with gross hematuria. Upper left: Axial T1-weighted out-of-phase gradient echo image reveals high.

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Presentation transcript:

42-year-old female with abdominal pain after karate kick with gross hematuria. Upper left: Axial T1-weighted out-of-phase gradient echo image reveals high T1 signal intensity indicative of hemorrhage within a left renal lesion (asterisk), confirmed as cystic on other sequences. Upper middle: Coronal T1 fat saturation image after intravenous gadolinium administration shows lack of cyst enhancement (asterisk). Upper right: Delayed postcontrast imaging confirms communication with collecting system, showing cyst contents filling with high signal gadolinium (asterisk). Hemorrhage within a calyceal diverticulum after trauma. Lower images: Pre- and postcontrast and magnetic resonance imaging (MRI) of a renal cell carcinoma adjacent to a cyst in another patient Lower left: Precontrast T1-weighted image shows similar intensities for the cyst, tumor, and normal renal parenchyma. Lower right: Postcontrast T1-weighted image. The cyst (long arrow) is nonenhancing. The margins of the enhancing renal cell carcinoma (short arrows) are seen. The central fluid collection does not enhance. 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_c006f037.png&sec=41088967&BookID=508&ChapterSecID=41088083&imagename= Accessed: December 17, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved