<s>[INST] hello doctor, I had a CT scan which shows that there is evidence of mid pole calculus seen of size 6mm on the right kidney. prominence of right renal pelvis and proximal third ureter seen with upper third obstructive ureteric calculus of size 13mm. on the left kidney there is evidence of three tiny calculi seen of sizes 3 to 5mm involving mid pole. please suggest whether URS, DJ stenting or lithotripsy will be better. can consuming only medicines remove the stones. [/INST] Hello, Thanks for the query to Chat Doctor. Forum. 13 mm stone, which is in ureter is cause of concern, but one favorable point is that this is in ureter and if forced diuresis, than may be chances of move from its position. Remaining all calculi may come out any time with Chat Doctor.  In my opinion consult a physician and get diuretics therapy under his supervision. This stone may impact at the base of urethra in penis, if it comes down due to forced diuresis, so urethra may get injury. Hope I have answered your question. If further any question I will help. Good luck.  </s>