The seven warning signs of cancer include changes in bowel or bladder patterns, a sore that does not heal, unusual bleeding, thickened breast or testicular tissue, indigestion, obvious changes in the appearance of a mole and nagging cough, reports WebMD. These symptoms should prompt patients to schedule a doctor's appointment.
In addition to these cancer signs, several other symptoms may be associated with the disease, according to Everyday Health. Unexplained pain, especially if it is persistent or severe enough to interfere with sleep, is a symptom of many forms of cancer. Fatigue and unintentional weight loss are also possible warning signs. Weight loss related to cancer often occurs quickly, which should trigger suspicion of an underlying disease process.
With new advances in treatment, many forms of cancer have positive prognoses if caught early. Learning about the warning signs is an important key to detecting cancer and getting effective treatment. The American Cancer Society provides recommendations for screening tests for breast, prostate, cervical, colon and other forms of cancer on its website. The organization also advises patients to consider possible screening for lung cancer if they have a history of smoking. Regular checkups for all patients increase the chance of early detection and possible cure of cancer.