The so-called growth pattern of cancer cells is also the growth mode of tumor. The growth rate of tumor varies respectively because of different types of tumors. Benign tumors generally grow more slowly, while malignant tumors grow more rapidly and the mass can increase rapidly in a short period of time. The growth of tumor is mainly divided into the following three forms: i. Inflammatory growth, which is the growth mode of benign tumor cells, the tumor cells grow slowly and can expand to the surrounding tissues, but will not invade and destroy the surrounding tissues and have less influence on the tissues, only when the lump is large will it cause the symptoms of local pressure and obstruction. Infiltrative growth, which is the growth mode of malignant tumor cells, the tumor cells divide and infiltrate into the surrounding tissues and destroy the lymphatic vessels and blood vessels of the surrounding tissues, so it is easy to be indistinguishable from the surrounding tissues and has a greater impact on the surrounding tissues. Exophytic growth, which is the growth mode of tumor occurring on the surface of body, body cavity surface or natural duct surface, is a growth mode that can occur in both benign and malignant tumors.