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Clinically orientated imaging of the prostate gland

Department of Radiology, St George's Hospital, London SW17 0QT, UK

• The zonal anatomy determines disease distribution. Cancer is principally a peripheral zone disease and benign prostatic hyperplasia affects the transition zone.
  
• Prostate diseases can affect urinary function in more ways than simple obstruction. Bladder frequency, hesitancy, urgency etc. can all result and the generic term lower urinary tract symptoms is used to describe this symptom complex.
  
• Prostate cancer is a common disease of variable morbidity. In most men it appears to be clinically silent.
  
• Prostate biopsy is the only reliable method for diagnosing prostate cancer. MRI is very useful for staging, but can only be reliably interpreted in those with biopsy proven cancer.
  
• Prostatitis is a difficult diagnosis to make, either clinically or on imaging.