Prostate cancer kills more than 300,000 men a year world-wide, 90 per cent of whom are older than age 65. At the same time, centres like the University College London Hospital (UCLH) are finding that past problems with interpreting PSA data have often been associated with the biopsy techniques often used following the finding of an elevated PSA level.

Questions of when and whom to test, how to treat and where to focus precious resources in the fight against cancer are explored by David Taylor, Emeritus Professor of Pharmaceutical and Public Health Policy, University College London.

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