Cystoscopy

Definition of cystoscopy
National Cancer Institute

cystoscopy

(sis-TOS-koh-pee)
Examination of the bladder and urethra using a cystoscope, inserted into the urethra. A cystoscope is a thin, tube-like instrument with a light and a lens for viewing. It may also have a tool to remove tissue to be checked under a microscope for signs of disease.

Source: NCI Dictionary of Cancer Terms