Cancer treatments vary greatly depending on the type of cancer and its progression. Generally, the most common types of cancer treatments are surgery, radiation therapy, chemotherapy, immunotherapy, hormone therapy, targeted drug therapy, stem cell transplantation, clinical trials, and palliative care. Surgery is used to remove cancerous tissues, radiation therapy uses high-energy X-rays to kill cancer cells, chemotherapy uses drugs to target cancer cells, immunotherapy uses drugs to boost the body's own immune system, hormone therapy works to stop cancer cells from growing, targeted drug therapy uses drugs to target certain receptors in cancer cells, stem cell transplantation involves replacing damaged cells with healthy cells, clinical trials involve testing new treatments, and palliative care provides physical, emotional, and spiritual support.