Abstract
Peduncular hallucinations are formed visual images often associated with sleep disturbance, and are caused by lesions in the midbrain, pons and diencephalon. In the present study, we report two patients who developed peduncular hallucinations following surgery in the suprasellar region. In one of these, the peduncular hallucinations were a sequele to endoscopic third ventriculostomy, while in the other, they were due to diencephalon and mid-brain compression by postoperative clot following excision of a hypothalamic astrocytoma.