First mucoid plaque is supposed to come from the small intestines and not from the large intestines (bowels).
Second colonoscopy only looks into your bowels.
Third not every one believes in mucoid plaque. There is a lot of controversy on it.
I believe in bowel cleansing and don’t know about mucoid plaque. I have been doing colon cleanse for over fifty years and have never seen any mucoid plaque. So whether it exist or not does not interest me. I only know that bowel cleansing on a regular basis makes me feel better. So does liver cleansing.
Also I don’t think that bowel cleansing needs to be “draconian”. It can be simple and not be so long. Mine last 3 to 5 days only. Read my blog titled “My challenge” link below.