Encyclopedia: Health Associations National Alliance Of Breast Cancer Organizations Symptoms And Side...
Cancer is a class of diseases in which a group of cells display the traits of uncontrolled growth , invasion , and sometimes metastasis . These three malignant properties of cancers differentiate them from benign tumors, which are self-limited, do not invade or metastasize. Most cancers form a tumor but some, like leukemia, do not. Cancer may affect people at all ages, even fetuses, but risk for the more common...