Brief Answer:
Extrarenal pelvis in kidney is a variation of normal, no treatment required

Detailed Answer:
Hi XXXXXX,
Thanks for writing in to us.

I have read through your query in detail.
As a radiologist I do ultrasound scans regularly and come across an extra renal pelvis once or twice in a week when doing scan on my patients. It is seen in 10 percent of normal people and is not a disease condition and requires no treatment.

The kidney has a collecting system through which the urine formed in the kidney is collected and transported from the kidney to the urinary bladder by tubular structures called ureters. The collecting system of the kidney ends in the renal pelvis and beyond this it continues as the ureters. The kidney pelvis usually fits within the kidney hilum or mouth. In some people (about 1 in 10) the kidney pelvis extends beyond the hilum and appears bulged out. This bulging out of the kidney pelvis beyond the hilum is called extra renal pelvis. It does not cause any harm.

The problem is that extra renal pelvis can be confused at many times and might appear like an obstruction in the passage of urine due to a stone in the ureter. For this reason extra renal ureter has to be given carefully on ultrasound scan.

If it is confirmed by your doctor on scan that there is extra renal pelvis then no treatment is required. However please keep in mind that if you get a scan done at any time then tell the doctor that you have extra renal pelvis. This will avoid confusion and wrong diagnosis.

Hope this answers your question. Please feel free to correct any oversight in my interpretation of your problems and discuss them in detail as per your requirements.

Hope your query is answered.
Do write back if you have any doubts.

Regards,
Dr.Vivek

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