This question is very thunderous. To put it bluntly, there are two words “no”. So why is there such a thing as “hemorrhoids turning into cancer”? I think there are two possible reasons, one is that the patient, or the patient’s family or friends or neighbors or colleagues, always thought that the patient had hemorrhoids, but when they went to the hospital, the results were surprising and they found out that it was bowel cancer. This leads to the assumption that the patient’s bowel cancer is the result of hemorrhoids. There is another possible reason why the doctor who saw you said that, if that is true, then he made up a false statement, and it is not good to speculate on the motive. From this incident we should know that the appearance and cause is not simple to figure out, seemingly related, but actually unrelated. The seemingly unrelated is actually related. Also, even the words of a doctor should not be taken at face value. Mencius said, “It is better to believe in a book than to have no book at all.” In this case, it is better to believe in a doctor than to have no doctor at all. I don’t believe everything I say, because although I try to tell the truth, I may not be telling the whole truth. Secondly, medicine is constantly evolving, and what is true today may be false tomorrow. So the conclusion is: all the studies so far have shown that hemorrhoids are not the cause of rectal cancer. The two words at the beginning are “no”!