Medical explainer on Instagram: "A colonoscopy is a procedure where a doctor uses a colonoscope—a long, flexible tube with a camera and a light on the end—to look inside your rectum and colon (large intestine). The Procedure: It typically takes less than an hour and is performed with sedation or anesthesia, so you are generally unaware and feel no pain. The doctor guides the scope through the anus into the rectum and colon to examine the lining. Polyp Removal: If the doctor finds any abnormal gr