In its early stages, cancer may have no symptoms, but eventually a malignant tumor will grow large enough to be detected.
As it continues to grow, it may press on nerves and produce pain, penetrate blood vessels and cause bleeding, or interfere with the function of a body organ or system.
The Seven Warning Signs of Cancer
The American Cancer Society uses the word C-A-U-T-I-O-N to help recognize the seven early signs of cancer:
Change in bowel or bladder habits
A sore that does not heal
Unusual bleeding or discharge
Thickening or lump in the breast, testicles, or elsewhere
Indigestion or difficulty swallowing
Obvious change in the size, color, shape, or thickness of a wart, mole, or mouth sore
Nagging cough or hoarseness
The following symptoms may also signal the presence of some types of cancer:
- Persistent headaches
- Unexplained loss of weight or loss of appetite
- Chronic pain in bones or any other areas of the body
- Persistent fatigue, nausea, or vomiting
- Persistent low-grade fever, either constant or intermittent
- Repeated infection
Call Your Doctor About Cancer if:
You develop symptoms that may signal cancer, that are specifically not related to another cause, or that persist for more than two weeks. If this occurs, schedule a medical examination. If the cause of your symptoms is cancer, early diagnosis and treatment will offer a better chance of a positive prognosis.