is usually due to hard stools. Usually it is not associated with colon
Rarely, if colon cancer
leads to constipation
and hard stools, then it may lead to fissure.
Rectal cancers are associated with piles due to blockage of the rectal veins by the tumour.
Better to see a Surgical oncologist
or a colorectal surgeon
if you are worried about the same
Feel free to contact me directly if you want to discuss this further.