The more common early signals of cancer are as follows: 1, long-term fatigue; 2, sudden weight loss; 3, more characteristic, if it grows on the surface of the body, it is obvious that it is a body mass, if it grows in the body cavity, CT, ultrasound can be found; 4, pain, it is more obvious; 5, long term chronic symptoms, there is a sudden change. All of the above are more common symptoms of cancer. If you are over 40 years old and have underlying diseases, such as hepatitis B, or a long history of alcohol consumption or smoking, you should be especially vigilant, and it is best to have regular medical checkups.