Adjuvant therapy is a type of treatment that is given after the primary treatment for cancer, such as surgery or chemotherapy, to lower the risk of cancer recurrence. The goal of adjuvant therapy is to eliminate any remaining cancer cells that may be present in the body after the primary treatment, in order to reduce the likelihood of the cancer coming back. Adjuvant therapy can include additional chemotherapy, radiation therapy, hormone therapy, targeted therapy, or immunotherapy. The specific type of adjuvant therapy recommended will depend on the type and stage of cancer, as well as individual patient factors. Adjuvant therapy has been shown to significantly improve outcomes for many cancer patients.