What are the signs and symptoms of cancer?

The most common warning signals of cancer are: change in bowel and bladder habits; a sore that does not heal; unusual bleeding and discharge; thickening of lump in the breast or elsewhere; indigestion or difficulty in swallowing; obvious change in a wart or mole and nagging cough or hoarseness. These signs can be caused by cancer or by a number of other problems. They are not a sure sign of cancer. It is always desirable to see a doctor if any problem persists as long as two weeks. None should wait for the symptoms to become painful; pain is not an early sign of cancer.