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Signs and Symptoms of Cancer

Cancer often causes noticeable symptoms. The most common warning signs of cancer are:

  • Change in bowel or bladder habits.
  • A sore that does not heal.
  • Unusual bleeding or discharge.
  • Thickening or lump in the breast or any other part of the body.
  • Indigestion or difficulty swallowing.
  • Obvious change in a wart or mole.
  • Nagging cough or hoarseness.

These symptoms are not always warning signs of cancer. They can also be caused by a much less serious condition. If any of these symptoms are present it is important to see a doctor. Only a doctor can make a diagnosis. Don’t wait to feel pain; early cancer usually does not cause pain. For additional symptoms of specific cancer types, see our Cancer Types section, then click on the link to the information section of the type of cancer.


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