CT imaging spectrum of infiltrative renal diseases
David H Ballard, Luis De Alba, Matias Migliaro, Carlos H Previgliano, Guillermo P Sangster
Abdom Radiol (NY) . 2017 Nov;42(11):2700-2709. doi: 10.1007/s00261-017-1193-5.
Most renal lesions replace the renal parenchyma as a focal space-occupying mass with borders distinguishing the mass from normal parenchyma. However, some renal lesions exhibit interstitial infiltration-a process that permeates the renal parenchyma by using the normal renal architecture for growth. These infiltrative lesions frequently show nonspecific patterns that lead to little or no contour deformity and have ill-defined borders on CT, making detection and diagnosis challenging. The purpose of this pictorial essay is to describe the CT imaging findings of various conditions that may manifest as infiltrative renal lesions.
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