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Home >Information for Patients > Dictionary Index

Dictionary of Cancer Terms

View in Spanish: Supervivencia sin evolución

Progression-free survival (pruh-GREH-shun ser-VY-vul)
The length of time during and after treatment in which a patient is living with a disease that does not get worse. Progression-free survival may be used in a clinical study or trial to help find out how well a new treatment works. Also called PFS.



 
 
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.