case_images: PMC5438013_01
case_images: CT abdomen - pelvis.
case_images: CNCS-5-001-01.jpg
case_images: PMC5438013_01_CNCS-5-001-01.jpg
case_images: Figure1
case_images: This demonstrated a large heterogeneous right renal mass with suggestion of active bleeding consistent with a hemorrhagic renal cell cancer (Figure 1).
case_images: Gross pathology demonstrates near diffuse replacement of bisected renal parenchyma by infiltrative tumor, extending into perinephric adipose tissue. The proximal ureteral wall (left) is markedly thickened and involved by lymphoma.
case_images: CNCS-5-001-02.jpg
case_images: PMC5438013_01_CNCS-5-001-02.jpg
case_images: Figure2
case_images: The pathologic specimen grossly showed a firm, diffusely infiltrative mass occupying the majority of the renal parenchyma with gross extension into perinephric adipose tissue (Figure 2).
case_images: H & E slide 200x. Diffusely infiltrative diffuse large B-cell lymphoma.
case_images: CNCS-5-001-03.jpg
case_images: PMC5438013_01_CNCS-5-001-03.jpg
case_images: Figure3
case_images: Microscopy of the mass revealed a population of large cells with atypical nucleoli, abundant mitoses, and prominent clear to eosinophilic cytoplasm (Figure 3).
case_images: CD20 IHC 200x. Diffuse membranous staining for CD20, consistent with B-cell origin.
case_images: CNCS-5-001-04.jpg
case_images: PMC5438013_01_CNCS-5-001-04.jpg
case_images: Figure4
case_images: This confirmed the diagnosis of diffuse large B-cell lymphoma (DLBCL) (Figure 4).