Rectal broad-based polyps are also a type of anal polyp and refer to polyps that are relatively large in size in the basal portion of the rectum. They are usually benign polyps, but they can also have a negative impact on human health. These polyps are more likely to become cancerous than ordinary polyps, with a 10% chance of cancer. In particular, polyps with abnormally fast growth rate, irregular shape, rapid increase in size and high growth rate are more likely to become cancerous. In order to prevent the possibility of malignant transformation, timely removal is needed. Due to the large size, it is difficult to remove. Once a rectal polyp is found, you should see a doctor promptly and have it surgically removed and sent for pathological examination after diagnosis.