Colon Cleansing For Colonoscopy Can A Colonoscopy Show If You Have The Membrane That Colon Cleansing Is Suppose To Remove?

Can a colonoscopy show if you have the membrane that colon cleansing is suppose to remove? - colon cleansing for colonoscopy

Cleaning the colon is always announced in my local radio station, I will for a colonoscopy every 3 years this show, if I have a membrane, the cleaning is to delete?