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