[Hallucinose pédonculaire with left MLF syndrome caused by midbrain infarction--a case report].

A 65-year-old male suffering from left MLF syndrome accompanied by transient hallucinose pédonculaire caused by the midbrain infarction is reported. In the first night of his admission with MLF syndrome, he complained of sleeplessness followed by transient visual hallucination. The hallucination was vivid and colored scene in which many strangers were seen around the patient, and he was well oriented without dreadfulness at that time. A small infarction in the left tegmentum was revealed by MR imaging, which was supposed to cause the hallucination.