India, Dec. 8 -- Colon cancer is often called a "silent" disease because it usually develops without any obvious warning signs. Many people don't know what it actually looks like inside the colon or how early changes begin. Dr Joseph Salhab, a gastroenterologist and health content creator from Florida, specialising in digestion, liver, pancreas and nutrition, shares in his December 8 Instagram post what colon cancer really looks like and the symptoms that should never be ignored. (Also read: Noida, Delhi oncologist warns 'persistent cough is not normal'; shares early signs of lung cancer you should not ignore )

Dr Salhab begins by showing what a healthy colon should look like. "This is what a colon should look like. It's fairly uniform i...