case_images: PMC10836750_01
case_images: Histology of a kidney section. A section of the kidney shows the presence of fibrosis and inflammation consistent with chronic tubulointerstitial nephritis (H&E, 200X).
case_images: cureus-0016-00000051595-i01.jpg
case_images: PMC10836750_01_cureus-0016-00000051595-i01.jpg
case_images: FIG1
case_images: Upon microscopic examination, chronic tubulointerstitial nephritis was identified with mononuclear inflammation, interstitial fibrosis, and atrophic renal tubules (Figure 1).
case_images: Histology of an abdominal lymph node section. An abdominal lymph node section showing the presence of enlarged, atypical lymphocytes with multiple mitotic figures (H&E, 400X).
case_images: cureus-0016-00000051595-i02.jpg
case_images: PMC10836750_01_cureus-0016-00000051595-i02.jpg
case_images: FIG2
case_images: The unusual component of this case is that the DLBCL was not found to be directly infiltrating the kidneys either grossly or microscopically (Figure 2).