These evidence suggests a stem cell population exists within the renal capsule.

The surface of the renal capsule is intact.

Other reports have suggested the renal tubule and renal capsule to be the site of stem cells.

For tumors that extend through the renal capsule and out of the local fascial investments, the survivability reduces to near 60%.

The renal capsule relates to the other layers in the following order (moving from innermost to outermost):

The perinephric fat may be regarded as a part of the renal capsule, called the adipose capsule of kidney.

The renal cortex is the outer portion of the kidney between the renal capsule and the renal medulla.

It is a highly aggressive neoplasm, more often presenting with penetration of the renal capsule, extension into the renal vein, and metastases.

The renal capsule is a tough fibrous layer surrounding the kidney and covered in a thick layer of perinephric adipose tissue.

The perirenal fat, or adipose capsule of kidney, is deep to the renal fascia but superficial to the renal capsule.

The 5-year survival rate if the RCC has not extended beyond the renal capsule; survival drops to 30% if there are distant metastases.

The renal capsule contain stain-retaining cells which exhibited markers for mesenchymal stem cells; after their removal, recovery was significantly slower post-ischemic injury.

The kidney is surrounded by tough fibrous tissue, the renal capsule, which is itself surrounded by perinephric fat, renal fascia (of Gerota) and paranephric fat.

Each renal artery branches into segmental arteries, dividing further into interlobar arteries which penetrate the renal capsule and extend through the renal columns between the renal pyramids.

The deeper layers below the renal fascia are, in order, the adipose capsule of the kidney (or "perirenal fat"), the renal capsule and finally the parenchyma of the renal cortex.