Late stage cancer, delirium, hallucinations.

Patients with advanced cancer showed delirium, hallucination and other manifestations, considering the following reasons: first, patients with advanced oxygenemia, resulting in brain cell ischemia and hypoxia, so showing some brain functional area cell abnormalities, resulting in delirium and hallucination phenomenon; second, consider that patients with advanced cancer may show water electrolyte and acid-base balance disorder, resulting in brain cell edema, resulting in functional abnormalities; The third, possibly metastatic, shows abnormalities in brain cell function that cause localized abnormalities, causing delirium and hallucinations.