“…The importance of prospective evaluation was underlined in a recent, large, prospective German study, which reported a 31.8% prevalence of mental disorders 4 weeks after diagnosis and a 39.8% prevalence at 12 months using the same instrument we used (CIDI). Finally, although we used a formal, semistructured psychiatric interview as a current gold standard to make diagnoses according to the ICD‐10, it is possible that subthreshold disturbances or other clinical expressions of significantly maladaptive responses to cancer (eg, demoralization, abnormal illness behavior) may have gone unrecognized. These psychological reactions often are not picked up by classic psychiatric nosological systems but could affect from 15% to 20% of patients with cancer …”