• A flexible sigmoidoscopy is a procedure that allows your doctor to view the lower part of your colon
• A sigmoidoscope is a thin tube with a camera that your doctor uses to screen for abnormalities such as polyps, cancer, bleeding, and hemorrhoids
• During the procedure, your doctor may remove tissue samples to be tested for cancer or other issues.
• Tell your doctor about all of the drugs, vitamins, supplements, and herbal remedies you use, as you may need to discontinue taking some of them before the procedure.
• You will need to stop eating solid foods the day before the test, and your liquids will be limited to clear fluids such as plain water, broth, carbonated beverages, and tea and coffee without milk or cream  
• It is advised not to eat or drink anything after midnight the night before the procedure
• You will also have an enema or take laxatives to clear your lower colon, which will let your doctor view inside your colon during the test
• After the procedure, you should be able to resume your normal activities and diet
• You may need someone to drive you home.
• After the examination, you may have slight abdominal discomfort, feel bloated, or pass gas for a few hours as your colon clears the air

Watch this video to learn more