Kidney tumor


Features to report

Last author update: 1 August 2016
Last staff update: 28 June 2022

Copyright: 2003-2022,, Inc.

PubMed search: kidney tumors features to report

Pallav Gupta, M.D.
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Cite this page: Gupta P. Features to report. website. Accessed December 9th, 2022.
Definition / general
  • Editor's note

  • Specimen type
  • Specimen laterality
  • Tumor location(s): upper pole / middle / lower pole
  • Tumor size(s) and focality
  • Gross extent of tumor
  • Histologic subtype
  • Sarcomatoid features: present / absent
  • Fuhrman nuclear grade
  • Microscopic extension of tumor: involvement of capsule, perinephric tissue, Gerota's fascia, renal vein / segmental braches / inferior vena cava, renal sinus, pelvicalyceal system, ureter, adrenal gland or other organ
    • There are several possible "capsules" - fibrous pseudocapsule over tumor (not always present), actual renal capsule (missing in hilar region) and Gerota's fascia (covers perirenal adipose tissue)
  • Margins: Gerota's fascia, renal vein, ureter
  • Partial nephrectomy: perinephric fat margin, renal parenchymal margin, renal capsule margin
  • Angiolymphatic invasion
  • Lymph nodes: location, number obtained, number involved by tumor, size of largest metastasis
  • Involvement of adrenal gland or other tissues
  • Pathology staging (pTNM) should be mentioned
  • Histopathological changes in the nonneoplastic kidney
    • Absent
    • Present: glomerular disease / tubulointerstitial disease / vascular disease

Microscopic (histologic) images

AFIP images

Inflammatory pseudocapsule

Outermost tumor cells are in perirenal fat

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