<prompt> Screening of prostate Ca commonly done bya DRE digital rectal examb USGc MRId PSAe CT scanbadacab  <response>: CSDT 11e writes - Even so, the realities of clinical practice are that the combination of digital rectal examination and serum PSA monitoring is the most effective screening protocol.This view of CSDT is supported by Smiths UrologyBut if we have to choose one investigation, it would be PSA. 