Aching pains and a change in skin color are a reason for a thorough check, including for cancer. This was stated by the famous Russian oncologist Ivan Karasev.
If a aching pain suddenly appeared in the human body, and for no apparent reason, which does not go away for a very long time, then you should be alert. Of particular concern are pains at night, felt in the stomach after lunch or dinner, or when swallowing food. You should definitely visit the clinic.
The oncologist named atypical signs of skin cancer
Another thing to worry about is changes in skin color. For example, if your face suddenly takes on an earthy hue, this may indicate a change in iron levels in the blood, provoked by malignant neoplasms in the intestines. The yellow color of the skin, in addition to the actual problems with the liver, indicates the possible presence of a pancreatic tumor, which is one of the most lethal in oncology. All this is a reason not to hesitate to visit a doctor and conduct all examinations.
An oncologist named the two most dangerous changes in the state of a mole
Naturally, it is necessary to be examined at a constantly elevated temperature, which does not want to fall for more than a week, with some seals on the body, and also sudden weight loss. Especially if you have not resorted to any extreme diets, but the weight is rapidly disappearing. If you have lost more than 7 kg in a month, it may be oncology. (READ MORE) 
Ivan Karasev Health oncologist , surgeon, endoscopist, 13 years of experience, candidate of medical sciences, highest category