Understanding Prostate Cancer: Causes, Risk Factors, and Treatment Options Prostate cancer starts in the cells of the prostate. A cancerous (malignant) tumor is a collection of cancer cells that can invade and destroy the tissues around it. As a cancerous tumor develops (metastasize), it can invade nearby tissues and potentially spread to other parts of … Continue reading Prostate Cancer | Symptoms, Stages, Types, Diagnoses, Chances of Surviving, Treatments