Colonoscopy is a diagnostic and preventive procedure used to examine the inner lining of the colon (large intestine) and rectum. It is commonly recommended to detect conditions such as colorectal cancer, polyps, inflammation, bleeding, or unexplained changes in bowel habits. Colonoscopy is especially important for cancer screening, as it allows doctors to identify and remove precancerous polyps before they develop into cancer.

The procedure is performed using a thin, flexible tube called a colonoscope, which has a camera and light at its tip. It is gently inserted through the rectum to provide a clear view of the entire colon. Patients are usually given sedation to ensure comfort. If polyps or abnormal tissue are found, they can often be removed during the same procedure.

Colonoscopy is considered safe and highly effective, with minimal risk when performed by experienced specialists. Regular colonoscopy plays a crucial role in early detection, accurate diagnosis, and prevention of serious colorectal diseases, helping maintain long-term digestive health.