Some patients think that pathological examination should be done only when there is a tumor on the body, so they often dispose of small polyps, appendices or skin on the body after surgery without sending them to pathology. This is not advisable. Some patients were hospitalized for appendicitis, but the appendix cut down after surgery was found to be adenocarcinoma of the appendix; some patients had pigmentation on the skin surface mistaken for epidermal nevus and left it untreated for a long time, but after the disease developed, the pathology was highly malignant melanoma; some thought the swelling in the anus was ordinary hemorrhoid, but after cutting it down, the pathology was found to be rectal cancer, etc. There are many examples like this, and some patients would lose their chance of treatment. There are many cases such as this, and some patients will lose their precious treatment opportunity. For this reason, don’t believe any doctor who tells you “it’s okay” based on visual observation alone.