Surgery is sometimes used to treat cancer of unknown primary (CUP). With CUP, the cancer has already spread beyond the place where it started, so surgery may not be helpful. However, surgery may be used to:
The type of surgery done depends mainly on the size and location of the cancer and other factors, such as a person’s overall health. Side effects of surgery depend on the type of surgical procedure.
Radiation therapy, and possibly chemotherapy, is sometimes given after surgery to destroy any cancer cells that may have been left behind.