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

### input:
Hi Doctor, I had 11mm stone in left kidney and 11 mm left ureter , 8mm & 4 mm in right kidney. Met an urologist last week and had laser surgery and stent was placed in both the kidneys after the surgery(Dr. said stent will be removed after three weeks) After one week, i had automated flow of urine and i went to another urologist as the First Dr. who did the surgery was out if station. He told me to take X ray and uv scan and told me that stent in left kidney got misplaced. He removed the stent from left kidney. However the scan report shows still 11mm stone is there in left kidney and 8mm stone is there in right kidney(stent still there). stone which was in urter and 4 mm stone in right kidney is not there now As of now dr. said lets discuss once the Dr.(who did laser treatment) came from vacation. What should i have to do now.?? How to remove the 11mm stone in left kidney. Will 8mm stone on right kidney will not be there after stent removal?

### output:

Hi, You have B/L renal calculi with left ureteric calculus. Probably your ureteric calculus was removed if in mid or lower part or pushed in if around PUB and followed ESL (can't comment as you have not provided the detail of your operation) hence not visualized in X-ray. In ESL calculus are broken in small fragments so that it can pass through small passage (5 mm) of ureter through urine and spent provide easy n broader passage preventing clogging of calculus. Fragmentation of calculus depends upon consistency, size, shape, hardness ....etc. hence sometimes does not fragment n requires multiple sitting.  Now as stent misplaced following (which can happen) surgery or probably ESL Not given to left side (as B/L in case ESL should be given in different sitting) and Fragmentation of Rt renal calculus was complete so they are still there ( and can be commented after detail of so) So in my opinion you need to have multiple sitting of ESL to remove calculi or in your case PCNL would be treatment of choice.  Do stone analysis test and maintain diet accordingly, Chat Doctor. Hope this ll heptanes n regards