A colonoscopy is a medical procedure used to examine the inside of your large intestine, including the colon, anus, and rectum. It is performed to identify any abnormalities or changes, such as polyps or cancer. Colonoscopy is considered the gold-standard screening tool for detecting colorectal cancer, as it allows for the early identification and removal of polyps, which can prevent the development of cancer.
Before the procedure starts, you will receive sedation or anaesthesia through an IV. During a colonoscopy, a colorectal surgeon uses a long, flexible tube called a colonoscope. This tool lets them insert air, or water into your colon and includes a light and camera for a clear view inside your colon and rectum. The procedure, which lasts 30 to 60 minutes, helps identify inflamed tissue, abnormal growths, and ulcers. Afterward, you will spend about an hour recovering from the sedative effects. Since it can take up to a day for the sedative to completely wear off, you'll need someone to take you home.