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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: AJR Am J Roentgenol. 2014 Jun;202(6):1196–1206. doi: 10.2214/AJR.14.12502

Figure 3.

Figure 3

Figure 3

Figure 3

Figure 3

54 year-old woman with a left renal mass at CT and clinical diagnosis of pyelonephritis.

A and B, CT with and without contrast shows apparent left upper pole mass with hypoenhancement relative to renal parenchyma. C, Enlarged retroperitoneal lymph nodes are also present.

D and E, Dynamic contrast-enhanced MRI one week later shows slightly smaller lesion, with corticomedullary differentiation internally, and continued hypoenhancement relative to parenchyma in the nephrographic phase.

F and G, Lesion also demonstrates marked restricted diffusion with loss of signal on corresponding ADC map. Focal pyelonephritis was diagnosed and resolved at follow-up MRI.