The presentation of tumor patients to tumor boards has widely developed into a medical standard. The necessary compliance to the medical standard can lead to obligatory presentation if the complexity of a case dictates that this cannot be comprehensively covered by a single treating physician. The organization of a tumor board must be so that the structure and specialist competence guarantees an adequate consultative function of the represented specialties. Tumor board members are not automatically promoted to become part of the treating team just by participation and therefore do not have a guarantor position but do have the obligation of care of a consulting physician. Tumor board decisions have a recommendation character, are not binding in the legal sense and do not relieve the treating physician from the obligation to critically scrutinize the recommendations before implementation. On the other hand the treating physician must be able to justify not following the recommendations on the basis of the medical obligation to care. The tumor board must fulfil the same requirements for documentation as any other consultative activity.
