The ureter, renal artery, and renal vein enter the kidney through the area known as the hilum. It leads into the hollow interior of the kidney, called the renal sinus.
Where is the renal sinus?
The renal sinus is a central spacious cavity formed by the extension of the perinephric space into the deep recess located at the medial border of the kidney
What does the renal sinus contain?
The renal sinus is a cavity within the kidney that 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.
What is the importance of renal sinus?
The observation of renal sinus fat is important for detecting a small tumor located in that area and determining the exact tumor stage.
Thus, the correct answer is renal sinus.
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