Piles or Haemorrhoids are inflamed or bulged blood vessels in the anus region. Their appearance resembles a bag of worms. These blood vessels get bulged or inflamed due to the increased pressure on them caused due to numerous reasons like constipation, bad food habits, sedentary lifestyle, etc. One of the most common symptoms of piles is rectal bleeding. Another disease that is associated with rectal bleeding is colon cancer. Since both these diseases are characterized by rectal bleeding, many people only think of piles and never see the angle of Colon Cancer.