Blood in the urine is another sign that should not be ignored. If you spot blood in your urine, you may have an infection or cancer. It may be a sign of either prostate cancer or bladder cancer. Changes such as urinary leaks or the inability to urinate are important warning signs to notice.
Bleeding moles are another sign of cancer. If the mole bleeds, changes shape or size, rush to the doctor. These types of sores can be revealing cancer beneath them. Skin is the largest organ of the body and it too can be attacked by cancer cells.