A cystoscope is a thin, tube-like instrument used by doctors to examine the inside of the bladder and urethra. It has a light and a camera at the end, allowing healthcare professionals to see any abnormalities, such as infections or tumors. This procedure is often performed when patients experience symptoms like blood in urine or frequent urination. During a cystoscopy, a doctor may also take tissue samples or perform minor treatments. The procedure is usually done in a clinic or hospital and can be uncomfortable but is generally quick. Patients may feel some soreness afterward, but it typically resolves within a few days.