American Urological Association - Kidney: Perinephric Fat and Gerota's Fascia

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Kidney: Perinephric Fat and Gerota's Fascia

Image A

Image B

Gerota's Fascia

  • Thin sheath of connective tissue that covers the kidneys (image A).

Perinephric Fat

  • Fibroadipose tissue invested between Gerota's fascia and renal capsule (image B).
  • These layers are important histo-anatomic landmarks for staging the extent of extrarenal extension by renal carcinoma (pT3 and pT4).
  • Involvement of Gerota's fascia by renal carcinoma indicates high stage disease (pT4).
  • Adipose tissue superficial to Gerota's fascia is called pararenal fat.

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