Fig. 4.

A 60-year-old male with microhematuria. a Nephrographic phase coronal reformatted image demonstrates a lower pole mass (arrow). It is difficult to determine whether the mass arises from renal parenchyma, such as a renal cell carcinoma (RCC), or from the renal collecting system, such as a urothelial carcinoma. b Excretory phase coronal reformatted image better delineates the anatomy and shows the lower pole calyx (arrow) is displaced by the mass, confirming that the mass does not arise from the calyx and thus is most likely a renal cell carcinoma. This was later confirmed to be a papillary RCC at pathology