DR. ARNOLD RIVERA / SCIENCE PHOTO LIBRARY DR. ARNOLD RIVERA / SCIENCE PHOTO LIBRARY
Basket extraction of bladder stones viewed from the prostate gland. To extract the stones, a ureteroscope is passed through the urethra into the bladder and used to locate the bladder stones. Once located, the stones are removed with a small basket (shown here) inserted through the ureteroscope; this is known as basket extraction.
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