[Delirium in patients with cancer].

Delirium is a frequent complication of cancer. It is the cause of patients' suffering and due to worsening of communication, the impediment to clinical assessment. It lowers the quality of life of family caregivers as well. Instant diagnosis and therapy of delirium are essential in clinical practice. In this review etiology, prevalence, clinical features and management of delirium in cancer patients are described.