[Teenage and young adult cancer: how to make effective disclosures?].

Announcement of diagnosis is a critical step in establishing a trust-based relationship of quality between patient and physician. Disclosing "bad news" is a difficult and sensitive task which has direct consequences on psychological, emotional and relational levels, as well as on therapeutic management. This is a potentially traumatic experience which requires a long process of integration and psychological adaptation. The hematologist-oncologist occupies a central position: He introduces the framework for a multidisciplinary care, while taking into account the personality and behavior of the teenager or young adult. We propose an analysis of doctor-patient interaction; an overview of psychological issues associate with diagnosis disclosure; suggestions to build and manage communication with patients; and a clarification of the role of the psychologist and of the psychological adjustment at the time of disclosure.