case_images: PMC6533961_01
case_images: CEUS image showing hypervascular mass in relation to the remained
  parenchyma of the native kidney with heterogeneous enhancement and
  pseudocapsule sign (arrows).
case_images: 2175-8239-jbn-3787-gf01.jpg
case_images: PMC6533961_01_2175-8239-jbn-3787-gf01.jpg
case_images: f1
case_images: The examination was performed using contrast harmonic imaging at a low mechanical index of 0,1. The exam was documented by digitally storing the images over 60 s in DICOM format. The images showed a hypervascular mass in relation to the remaining parenchyma of the native kidney with heterogeneous enhancement and pseudocapsule sign (Figure 1).
case_images: (CEUS) - Quantitative analysis with time-intensity curve. In the
  arterial phase, the mass was considered hypervascular when compared to
  the remaining parenchyma.
case_images: 2175-8239-jbn-3787-gf02.jpg
case_images: PMC6533961_01_2175-8239-jbn-3787-gf02.jpg
case_images: f2
case_images: Accordingly, in the arterial phase, the mass was considered hypervascular when compared to the remaining parenchyma (Figure 2).
case_images: Renal oncocytoma - CT scan exhibiting the typical imaging morphology
  of a solid, homogenous, unilateral lesion with isodensity as compared to
  the normal adjacent renal parenchyma.
case_images: 2175-8239-jbn-3787-gf03.jpg
case_images: PMC6533961_01_2175-8239-jbn-3787-gf03.jpg
case_images: f3
case_images: Left - The 2.5 cm diameter tumor was reddish-brown, lighter than
  cortex, with well-circumscribed borders that mimics a capsule, and
  without central scar. In addition, there were multiple coalescing small
  grayish nodules scattered throughout the mass. Right - microscopic
  findings showed numerous tubular cells with abundant granular cytoplasm
  and large nuclei.
case_images: 2175-8239-jbn-3787-gf04.jpg
case_images: PMC6533961_01_2175-8239-jbn-3787-gf04.jpg
case_images: f4
case_images: The microscopic findings showed numerous tubular cells with abundant granular cytoplasm and large nuclei (Figure 4).