This section presents a review of radioimmunotherapy in cancer treatment, exploring both current practices and future directions. Radioimmunotherapy involves the use of radioactive substances coupled with antibodies to target and destroy cancer cells. The review delves into the efficacy of this approach in various cancer types and discusses ongoing research aimed at enhancing its effectiveness and reducing side effects. Additionally, the section provides insights into potential advancements and innovations in radioimmunotherapy that may shape the future of cancer treatment.