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Langerhans cell histiocytosis(以後LCHと略す)が中枢神経系を侵すことは稀ではなく,視床下部,大脳半球,小脳,脳幹,脊髄などに発生する。われわれは,肺に初発し,引き続き視床下部にも病変を生じ,急速に増大をきたしたLCH, multifocal typeの1例を経験したので報告する。
症例は52歳男性で,胸部に好酸性肉芽腫が存在。尿崩症,中枢性高熱,頭痛があり,視床下部に病変が認められ,これは短期間に増大した。組織学的にLCHと診断し,20 Gyの局所放射線療法を行い,放射線照射終了後,病変は徐々に縮小していった。
A case of Langerhans cell histiocytosis (LCH) in the hypothalamus is presented. A 52-year-old man with eosinophilic granuloma of the lung was refer-red to our hospital. He complained of headache, easy fatigability, high fever, and voiding large quan-tities of urine, but was otherwise asymptomatic. T1 -weighted images demonstrated a small mass in the hypothalamus. After about six months, the mass had grown to 2cm in diameter.
Surgery was performed by a pterional approach and a biopsy specimen was collected.
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