Hello, welcome to healthcaremagic. Your renal stones
of size 12 mm are large enough making them unable to pass through ureters in urine. You should consult a surgeon for proper treatment for stone removal. For kidney
stones that do not pass on their own, a procedure called lithotripsy
is often used. In this procedure, shock waves are used to break up a large stone into smaller pieces that can then pass through the urinary system
. Surgical techniques can also be used for stone removal. Wish you good health.