Is A Ribbon Shaped Stool A Cause Of Concern?

Hi,have passed long ribbon-like stools twice now as within a month but majority of the times that I passed stools, they looked normal. However, when i did passed ribbon stools, i clearly remember that there was no difficulty at all,in fact, it felt pretty easy to pass those type of stools. I make sure i always drink a lot of water. Perhaps this fact helped eased the situation? I ve gone through colonoscopy two years ago due to an abdominal discomfort and the result was negative, but the examination was only half-way through my colon. Would you think I would need to have another one?