With the exception of skin cancer, prostate cancer is the most common type of cancer among men in the United States. Early detection may result from a blood test called a PSA (prostate-specific antigen), and/or a digital rectal exam. The digital rectal exam checks the rear surface of the prostate gland for any abnormalities. A lump or hardness found during the exam might be a sign of prostate cancer.
Reviewed last on: 9/7/2008
Louis S. Liou, MD, PhD, Assistant Professor of Urology, Department of Surgery, Boston University School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.