Benign tumors grow more slowly, some do not grow for several years, and some increase rapidly within a few months. Benign tumor is a type of tumor, its cellular morphology and so on and normal is relatively close, and the blood supply is relatively less, so the growth rate is relatively slow, some patients can grow for ten years, twenty years or even more long time will not have obvious changes, but there are benign tumors grow faster, half a year, a year will have obvious growth. Benign tumors generally do not appear metastasis, at the same time will not be very to the formation of infiltrative growth of the surrounding tissues, such as small size, no obvious clinical manifestations, no need to carry out special treatments, regular review can be; such as large size accompanied by abnormal manifestations or faster growth, need to be timely surgical resection.