[Medical acting confronted with vague prognoses. Considerations about the structure of medical acting].

The article examines the structures of the medical acting, especially in oncology. It discusses how to address the issue of an adequate response to the structures of medical acting. In addition to a commitment to certain goals (for the benefit of patients, to do no harm, respect of autonomy of the patient) a doctor has to act according to the rules of art. This requires specialist knowledge and skills. Additionally the always remaining uncertainty of medical acting requires an internal disposition, which is also understood as a virtue.