Brief Answer:
Explained as follows :

Detailed Answer:
Hi.
Thanks for your query.
Your query is just about '' explain the report''.

Well.
mild pelvicalyceal system and ureteric dilatation noted on the left side ::
Ureter is tube that connects kidney above to the urinary bladder- the only function is to take the urine from kidney to the bladder. So the stone which was in the kidney, while passing/going into the bladder got stuck - midway between the kidney and the urinary bladder.
The kidney is still functioning and producing urine. The back-pressure due to impacted stone gives fullness in the collecting apparatus of the kidney- called as pelvis and calyses.
So your report is showing ''mild'''form of fullness. This is called as dilatation of ureter ''above the impacted stone and the pelvi-calyceal system of the kidney.
You need to confirm the level of functioning by Intravenous Pyelography (IVP).

If you please refer to the diagrams available on net:: you will certainly easily understand what I mean by. The kidney filters the liquid part of the blood and necessary things of the blood are reabsorbed. Te extra water with the waste is first collected by the calyses ( multiple of calyx). All the calyses continue as a pelvis- a funnel shaped collecting and transit part of the kidney. This narrows to for a ureter which connects and allows the passage of urine into the urinary bladder ( which stores the urine).

There is one stone of 5 mm in the left side of the kidney in a position of the mid pole of the calyx.

Another in the right kidney at the level of lower pole calyx.

The stone in the calyses can be staying there to grow or can be dislodged to pass via the ureter into the urinary bladder.

I have tried my best to make it as simple as possible. IF this is oversimplification, I am sorry. Please feel free to ask for more clarification; I shall be happy to assist you.

A word of precaution:: there are no pills that can reduce the stone.
The 9 mm stone impacted in the ureter has to be removed to avoid damage to the left kidney.

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Brief Answer:
9 mm stone needs a procedure to remove it.

Detailed Answer:
The stone of any nature or size does not dissolve. If it has to dissolve , it would not have formed.
Plenty of water orally helps to remove smaller stones mechanically - they are pushed due to the increase volume and force of urine due to more water one drinks; and passed down in to the bladder. The stones which can reach urinary bladder can then easily pass out of the urethra as the size and accomodability of urethra is more than the ureter. ( please remember this is a general rule and happens most of the times.).

The 9 mm stone which is impacted in the ureter can not pass down. It is now fixed and needs to be removed by some procedure.
The procedures are decided by the choice and expertise of your Urologist/ instrumentation available /

Both the 5 mm stones in the calyses may be flushed out of the system by forced diuresis by plenty of oral fluids.

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