Adjuvant treatment is a type of therapy administered after the main treatment for a disease, such as surgery or chemotherapy, to reduce the risk of the disease returning or spreading. It is often used in the treatment of cancer to target any remaining cancer cells that may not have been removed during surgery or destroyed by initial treatment. Adjuvant treatment may include additional chemotherapy, radiation therapy, hormone therapy, or targeted therapy, depending on the specific type and stage of cancer. This approach aims to improve the overall effectiveness of treatment and increase the likelihood of long-term survival.