Complex sentence: It is typically performed when the results from a PSA blood test rise to a level that is associated with the possible presence of prostate cancer or based off an abnormal digital rectal exam (DRE).
Split into simpler sentences: It is typically performed when the result from a PSA blood test rises to a level that is associated with the possible presence of prostate cancer. It may also be triggered by an abnormal digital rectal exam (DRE).