Figure 2
From: Unexpected outcome after sclerotherapy of simple renal cyst
(a) Macroscopic view of the surgical specimen. A cystic renal tumor was found in the middle of the left kidney that was unconnected to the pelvis renalis. The tumor arising from the cystic wall was gray and multinodular. (b) Microscopic examination revealed that tumor cells with high atypia exhibited tubular and papillary growth patterns (original magnification × 100).