Is a tubulularvillenous colon polyp that is 40mm considered big? what are the chances it could become malignant if not removed?

Should remove: You should get it it removed , 40 mm polyp is pretty big , due villous component will have higher incidence of cancer . Please get it removed if possible by endoscopy , speak to your doctor.

Yes: A 40 mm polyp is big. Some studies suggest that tubulovillous polyps over 20 mm in size have a 50% chance of becoming malignant. But why take any chance? All such polyps should be removed.