Fig. 11
From: Imaging spectrum of renal oncocytomas: a pictorial review with pathologic correlation
A 64-year-old man with bilateral multifocal oncocytomas coexisting with papillary RCC of the right kidney. The coronal reformatted image in the nephrographic phase of the CE-CT demonstrates five solid masses (arrows) and one simple cyst (asterisk). An exophytic right renal mass with relatively decreased contrast enhancement (smaller white arrow) was found to be papillary RCC. The four remaining enhancing masses were oncocytomas. Note that the small tumours are homogeneous (smaller black arrows), while the larger tumours are relatively heterogeneous (larger white arrows)