Final answer:
Nephrolithotomy is a procedure used to remove large pelvic stones. It involves the use of a nephroscope to pass inside the renal collecting system through the appropriate calix to remove the stone.
Step-by-step explanation:
A symptomatic large pelvic stone can be treated with a procedure called nephrolithotomy.
This procedure involves the use of a nephroscope to pass inside the renal collecting system through the appropriate calix to remove the stone.
During nephrolithotomy, the stone is fragmented and extracted by using special instruments inserted through small incisions in the skin.
This allows for the removal of large stones without the need for open surgery.