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Early diagnosis of prostate cancer saves thousands of lives every year. Prostate Specific Antigen or PSA is one of the main indicators that help diagnose this pathology, which is the type of cancer that most affects the male population in Europe. PSA is a protein found in the blood and is produced almost exclusively in the prostate, and that is why it is a good indicator of prostate cancer risk. In this #EntreUrólogos video, Dr. Josep Maria Gaya, Assistant of the Urology Service of the Fundació Puigvert and expert in Oncological Urology, explains what it consists of.