Malignant tumors generally tend to have no obvious symptoms in early stage, but cancer from specific organs or tissues, patients can have obvious symptoms, for example, various malignant tumors with endocrine function will have various related symptoms. Generally, the symptoms of malignant tumors are divided into two aspects, local and systemic. The local symptoms are mainly pain on the body surface or internal organs caused by the pressure and invasion of the mass. In addition, it will be combined with infection and pain will cause local irritation. Systemic symptoms will include fever, anemia, wasting and weakness, etc. The diagnosis can be confirmed by imaging and pathological examination.