Peduncular Hallucinationを呈した脳幹部海綿状血管腫の1例

Peduncular Hallucination in Brain Stem Cavernous Angioma: A case report

I．はじめに

　Peduncular hallucinationは1922年Lhermitteにより初めて報告された夢幻状態であり^11），その名称は比較的良く知られているが実際にこのような症例に遭遇することは稀である．また，その責任病巣は中脳被蓋部と言われている^20）が実際には例外も多く^1,9,18,21），現時点で明確な結論は出ていない．今回われわれは出血にて発症しpeduncularhallucinationと考えられる幻覚症状を認めた脳幹部海綿状血管腫の1例を経験したので若干の文献的考察を加えて報告する．

A case of brain stem cavernous angioma associated with peduncular hallucination is reported.

A 68-year-old man was admitted with complaints of left sensory disturbance. On the evening of the first hos-pital clay, he developed vividly formed hallucinations. The hallucinations were accompanied by sleep disturb-ance and agitation. At approximately 2:00 am, he began to feel as though he could see his daughter watching tele-vision in a room. At one point he saw vivid pictures. MRI revealed a round mass with a mixed signal intensity core surrounded by a low signal intensity rim in the right brain stem. On the 10th hospital day, there were no hal-lucinations. On October 12th suboccipital craniectomy was performed and cavernous angioma and the sur-rounding hematoma was partially removed. Soon after that the patient was discharged with improvement of both ocular movement and left-sided sensory disturb-ance.