Chemotherapy is the use of drugs to kill cancer cells. It has become an important part of many treatments as the drugs have become more effective. There are several ways that the drugs can be given. They include: systemic, intravesical, intraperitoneal, topical or intralesional. There is also chemotherapy that is used to prepare the body for a bone marrow transplant. Click on the buttons below for information on how the different ways chemotherapy can be given.