14 Signs of Cancer is not a scientific statement, after suffering from cancer, there may be fever, fatigue and other systemic manifestations, and according to the different parts of the cancer may appear different manifestations. Cancer is a malignant disease caused by heredity, environment and other factors, and after suffering from cancer, generalized clinical manifestations such as fatigue, fever, and unexplained emaciation may appear. In addition, it is often accompanied by specific manifestations in different parts of the body. For example, lung cancer may present symptoms such as cough, sputum, hemoptysis, chest pain, etc. Colon cancer is often accompanied by blood in stool, change of stool habit and character, and abdominal pain. At this time, cancer can be diagnosed through clinical manifestations, CT, MRI and other imaging examinations, pathological biopsy, etc., and then can be treated by surgery, radiotherapy and chemotherapy. In conclusion, when discomfort occurs, one should seek medical treatment in time and believe in scientific treatments instead of just listening to rumors.