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The renal fascia is a dense, elastic connective tissue envelope enclosing the kidney and adrenal gland, together with the layer of perirenal fat surrounding these two. [1]The renal fascia separates the adipose capsule of kidney from the overlying pararenal fat.
The signs and symptoms of hydronephrosis depend upon whether the obstruction is acute or chronic, partial or complete, unilateral or bilateral.Hydronephrosis that occurs acutely with sudden onset (as caused by a kidney stone) can cause intense pain in the flank area (between the hips and ribs) known as a renal colic.
The surface of the kidney has a pelvic recess and one or more transverse cortical grooves, presumed to be a failed formation of a renal lobe. The renal parenchyma next to the hypoplastic part of the kidney is seemingly normal; however, it can undergo hypertrophy, making the grooves more noticeable. [citation needed]
Renal autotransplantation: transfer of the left kidney from its original location into the body to another location to prevent venous compression. [ 6 ] Nephrectomy: in cases involving failed surgical treatments or individuals who do not wish to undergo open surgeries, removing the kidney via laparoscopy for altruistic donation is an option.
The unipapillary kidney with a single renal pyramid is the simplest type of kidney in mammals, from which the more structurally complex kidneys are believed to have evolved. [17] [6] [18] Differences in kidney structure are the result of adaptations during evolution to variations in body mass and habitats (in particular, aridity) between species.
The kidney lies directly below this area, so is the place where, with percussion (Latin: sucussio renalis), pain is elicited when the person has kidney inflammation. The presence of pain is marked as a positive Murphy's punch sign or as costovertebral angle tenderness .
A partial nephrectomy should be attempted when there is a kidney tumor in a solitary kidney, when there are kidney tumors in both kidneys, or when removing the entire kidney could result in kidney failure and the need for dialysis. Partial nephrectomy is also the standard of care for nearly all patients with small renal masses (<4 cm in size). [22]
The kidney is surrounded by a capsule separating the kidney from the echogenic perirenal fat, which is seen as a thin linear structure. [1] The kidney is divided into parenchyma and renal sinus. The renal sinus is hyperechoic and is composed of calyces, the renal pelvis, fat and the major intrarenal vessels.