Treatment options depend on the type of cancer, its stage, if the cancer has spread and your general health.  The goal of treatment is to kill as many cancerous cells while reducing damage to normal cells nearby.  Advances in technology make this possible.  The three main treatments are:  Surgery:  directly removing the tumor  Chemotherapy:  using chemicals to kill cancer cells  Radiation therapy:  using X-ray to kill cancer cells  The same cancer type in one individual is very different from that cancer in another individual.  Within a single type of cancer, such as breast cancer, researchers are discovering subtypes that each requires a different treatment approach.

Source:  NCI  Cancer Treatment Centers of America (CTCA)