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PSA after radiation for prostate cancer
Deborah A Kuban1, Howard D Thames, Larry B Levy
1Department of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77007, USA. dakuban@mdanderson.org
Oncology (Williston Park, N.Y.)
|June 24, 2004
Summary
The 1996 ASTRO consensus definition for prostate cancer radiation failure, while influential, requires further study. Research is needed to evaluate its effectiveness and explore universal failure definitions across various treatment modalities.
Area of Science:
- Oncology
- Radiation Oncology
- Medical Imaging
Background:
- Prostate-specific antigen (PSA) is a key tumor marker for prostate cancer.
- The 1996 ASTRO consensus definition addressed treatment failure after radiation for intact prostates.
Purpose of the Study:
- To evaluate the ASTRO consensus definition for prostate cancer treatment failure.
- To investigate alternative definitions and their sensitivity/specificity.
- To explore universal failure definitions across multiple treatment modalities.
Main Methods:
- Review and analysis of existing datasets on external-beam radiation therapy.
- Comparative analysis of the ASTRO definition against other proposed failure definitions.
- Exploration of failure definitions specific to brachytherapy.
Main Results:
- The ASTRO definition has been widely used but also raised concerns and criticisms.
- Studies have investigated the sensitivity and specificity of the ASTRO definition.
- Differences in outcomes based on various failure definitions have been analyzed.
Conclusions:
- The ASTRO definition, primarily based on external-beam radiation, needs further validation.
- Failure definitions for brachytherapy require dedicated exploration.
- A universal definition of failure for prostate cancer, applicable across modalities like surgery, warrants investigation for research purposes.