How is carcinoma of unknown primary (CUP) treated if it returns?

How is carcinoma of unknown primary (CUP) treated if it returns?

Carcinoma of unknown primary (CUP) that recurs is usually treated within a clinical trial with an investigational drug. Your healthcare team will determine where in your body cancer has returned, the type of cancer it is and how it was treated before. You and your healthcare team will decide the treatment option that is best for you.