Hi and welcome to HCM. Thank you for your querry.
Most of bleeding through rectum
is non complicated and in more than 95% the exact cause is never found.
EVen with colonoscopy
. Because it is usually some angiodysplasia
or polyp which bleeds for a minute and then stops. After that it is hard to find the exact position of bleeding, and isnt necessary because this is minor amount of blood(most patient panic because think this is some svere bleeding).
ALso , most of such bleedings are found in anus and rectum whixh can be examined by digitorctal exam or proctoscopy. So there is no need to do colonosopy again. It can be hemorhoids which wasnt protruded on the first exam. YOu should do frequent follow ups and everything would be just fine.Cancer is the last that should be on your mind, But if you are>55 you shud do colooscopy every 7-10 years.
Wish you good health.