Os níveis de PSA e os exames e intervenções à próstata

Um relato em primeira-mão de uma história que começou com níveis de PSA elevados (testados por análises ao sangue):
http://m.huffpost.com/uk/entry/12751516


Citando:
"[I] had a PSA level of 16.  Now, PSA (prostate specific antigen, measured in nanograms per millilitre of blood) can give both false negatives and false positives.  Normal levels of PSA in the blood are between 0-2.5 ng/ml. Higher than normal levels, greater than 2.5, can be caused by cancer or by benign, non-cancerous conditions such as an enlarged prostate, prostate inflammation, infection, or trauma. But all elevated readings of PSA should be investigated."