Benign tumor is also called good tumor, which usually forms a lump on the surface of the body or in the internal organs. This lump is usually clearly demarcated from normal tissues, most of them are movable, with slow growth and long course, no metastasis, no bleeding and necrosis, and rarely rupture. If it occurs in important organs such as heart and brain, even a benign tumor (such as brain astrocytoma) can kill the patient, and some people call it malignant location. However, the same benign tumor (such as neurofibroma), if it occurs on the surface of the body, will have little effect on the organism. The director of Heavy Disease Not Heavy High suggests that there are two categories of tumors, benign and malignant, and benign tumors can also become malignant. Therefore, the general principle is that any swelling found in the body or on the body surface should be surgically removed if the body allows it, and the excised specimen should be sent to the pathology department for histological examination to exclude the possibility of malignancy.