Flat, ribbon like stool and loose stools dont necessary mean that anything is wrong, it can be a diet thing, like lack of fiber or the way you sit on the toilet, even hemorrhoids. Its great getting it checked out, but if you dont have any bleeding, stomach pain, painfull stools or anything like that, I would not worry to much. Actually on the Danish Cancer website where they list around 10 symptoms on Colon Cancer, thin stools are not mentioned, and I get the feeling that many people have experienced it. If the doctor find nothing wrong and the problem continues try buying a squatty potty, it sounds silly but it work wonders.
2017: 15mm Tubulovillous adenoma- Low grade dysplasi.
Next scopy: original 2020 probably 2018-19