Cancer is a malignant disease, and most tumors still have a low cure rate. Therefore, anyone who learns that he or she has a tumor (even if he or she is a medical person) will be at a loss as to what to do, both personally and as a family member. For ordinary people, they are even more headless and lose their direction. Although there are many kinds of tumors, and the diagnosis and treatment methods are complicated and different, at least we should know and be clear about the general direction of medical treatment and the key points that need to be paid attention to. 1. Initial preparation If the tumor is initially confirmed or highly suspected by imaging examination, for example, lung cancer is suspected, CT examination of the whole body (head, chest, abdomen, bone scan) and other examinations are usually needed at this time (if there are conditions, PET-CT examination of the whole body can be done), which aim at determining the scope of tumor metastasis, determining the staging (if there is no pathology, sometimes it is necessary to take puncture biopsy, determining the nature of the mass and staging) to determine whether surgery is possible. whether surgery is possible. It is irresponsible to operate blindly without evaluating the systemic metastasis of the tumor, because once distant metastasis occurs in lung cancer, surgical treatment is usually not needed. If surgery is possible, it should be performed as soon as possible.