Hi doctor! I had a colon polyp that was removed 6 months ago. But now it is growing again. The doctor told me what to do when colon polyps grow back after 6 months of surgical removal?

My great-grandfather is 89 years old this year, he passed stools with blood, the doctor said he had colon polyps, but only the first part of the polyp is good, and the rest is not good. So the doctor told me how to treat colon polyps in the elderly? Thanks for the advice doctor.