A clean excision of a malignant tumor doesn’t mean it’s okay, there is a possibility of metastasis and recurrence. Surgery is the mainstay of malignant tumor treatment. Most stage 1 malignant tumors can be cured after surgical resection, but metastasis and recurrence may occur, so it is recommended to go to the hospital regularly for review after surgery. For malignant tumors at stage 2 and above, especially those with high degree of malignancy and poor physical condition, recurrence and metastasis are more likely to occur. After surgery, radiotherapy and chemotherapy can be adopted under the guidance of doctors to assist treatment. It is recommended that patients follow the doctor’s instructions and have regular checkups after surgery to avoid delaying their condition.