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The renal fascia separates the adipose capsule of kidney from the overlying pararenal fat. The deeper layers deep to the renal fascia are, in order, the adipose capsule (or perirenal fat), the renal capsule and finally the parenchyma of the renal cortex. [2] At the renal hilum, the renal capsule extends into the renal sinus. [1]
Perirenal fat (also "perirenal fat capsule", "perinephric fat, [5] or "adipose capsule of the kidney" [6]) is external to the fibrous capsule of the kidney, and internal to the renal fascia (which separates it from the pararenal fat); connective tissue trabeculae extend through it to unite the fibrous capsule of the kidney, and the renal fascia ...
The renal capsule surrounds the functional tissue of the kidney, and is itself surrounded by a fatty adipose capsule, fascia, and fat. From the inner part of the kidney to outside the kidney, the positioning of the capsule is: renal medulla; renal cortex; renal capsule; adipose capsule of kidney (or perirenal fat, or perinephric fat) renal fascia
Radiology [ edit ] A magnetic resonance imaging (MRI) scan may be used to identify the collection of blood, although this is often not performed if bleeding is a medical emergency .
The renal sinus is a cavity within the kidney which is occupied by the renal pelvis, renal calyces, blood vessels, nerves and fat.The renal hilum extends into a large cavity within the kidney occupied by the renal vessels, minor renal calyces, major renal calyces, renal pelvis and some adipose tissue.
A total nephrectomy is the removal of at least the entire kidney, whereas a 'radical nephrectomy' also includes at least some perinephric fat, possibly including Gerota's fascia, and usually also the ipsilateral adrenal gland. [10] For some illnesses, there are alternatives today that do not require the extraction of a kidney.
Ten percent of RCC will contain calcifications, and some contain macroscopic fat (likely due to invasion and encasement of the perirenal fat). [ 46 ] Deciding on the benign or malignant nature of the renal mass on the basis of its localized size is an issue as renal cell carcinoma may also be cystic.
Perinephritis is an infection of the surroundings of the kidney either right or left. It can be the result of extravasated infiltration of the bacteria out of the renal pelvis (pyelonephritis) or a result of another kidney infection.