### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
CT Urography:( CTU)16/7/2012 Findings: Both kidneys are normal in size and shape. Bio polar length of the right is 10.7cm and left kidney is 9.7cm. there is a calculus seen at the lower pole of the kidney measures approximately 0.4cm. A cortical cyst seen in the mid pole of the left kidney measures 2.2 x 2.4cm. No calculi seen at the right kidney. Extra renal right renal pelvis noted. A small cyst noted in the upper pole of the right kidney measures 0.9 x 1.0cm. No hydronephrosis bilaterally. Both ureters are normal. No ureteric calculus. Urinary bladder is fully distended with a normal outline. No bladder calculus seen. Impression: 1. Small left renal calculus. 2. Bilateral renal cyst . 3. Right extra renal pelvis.

### output:

Good Day! 1. Calculus in lower pole - you have a stone on the lower pole of your left kidney, it is a small stone 0.4 cm and can be treated medically for stone dissolution. It is too small to be treated surgically or on any invasive procedure. I would suggest Chat Doctor. 2. Cortical cysts - cortical cyst or simple cyst are not clinically significant. It does not cause pain nor does it become cancer.  No need to be worried about this finding.3. Extra renal pelvis - extra renal pelvis means that you were born with the tube that connects your kidney to your urinary bladder developed outside the kidney. It is a normal variant and does not have a clinical consequence. Thank You.