cancer types

Cancer is a group of diseases characterized by uncontrolled cell proliferation that spreads to multiple parts of the body. Not all tumors are cancerous; benign tumors do not spread although they may grow large relative to the related body part. Possible signs and symptoms include a lump, abnormal bleeding, prolonged cough, unexplained weight loss and a change in bowel movements. While these symptoms may indicate cancer, they may have other causes. Over 100 cancers affect humans