Right kidney extrarenal pelvis means what?

Extra renal pelvis : The pelvis of the kidney is middle where everything centers. As urine is made by filtering blood this area collects urine then leads out through ureters to bladder. You have a more extensive area that resides in part outside the parameters of the kidney. Sometimes the appearance of this may be the result of obstruction. In general the concern is a larger pelvis means urine is stagnant.