Figure 2.

Computed tomography (CT) appearance of the inflammated cyst including a nephrolith mimicking a Bosniak III lesion. A 45-year-old female with a history of pyuria, hematuria and bacteruria. Thickened irregular wall and septa with contrast enhancement can be observed in the upper third of the right kidney. Unenhanced (a), corticomedullary (b), nephrographic (c) and excretory (d) phases axial CT images. Macroscopic documentation (e), with H and E stained histological sections at magnification ×1 (f), ×5 (g) and ×10 (h)