Is fever of unknown cause cancer precursor?

Unexplained fever is not necessarily a precursor to cancer. When patients show fever of unknown cause, standardized auxiliary examinations should be carried out to exclude inflammation, malaria, typhoid fever and other common febrile diseases. When malignant tumor patients progress to a certain extent, they will show fever of unknown cause, and many patients do not pay enough attention to it. The patient shows fever of unknown cause, oncologist should pay close attention to it, consider the possibility of cancer, carry out standardized examination of respiratory system, digestive system, urinary system, etc., and exclude or clarify whether the patient has malignant tumor. Therefore, fever of unknown cause cannot exclude the possibility of malignant tumor of the patient.