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Ⅰ.はじめに
Neurofibormatosisはcafe-au-lait spotsやneurofi-bromaなどの皮膚病変に加え,骨病変,眼病変のほか,中枢神経系腫瘍を高率に合併する疾患である6).Neurofibromatosisは,皮膚症状が著明なneurofibromatosis type 1(NF 1)と両側聴神経腫瘍を特徴とするneurofibromatosis type 2(NF 2)に大別され,両者とも常染色体優性遺伝を示し,すでにその責任遺伝子も特定されている.中枢神経系腫瘍の合併はNF 2では高頻度にみられるが,NF 1では多くなく,その大半は視神経膠腫で,下垂体腺腫の合併例の報告は極めて少ない7).
今回,われわれはNF 1に下垂体腺腫を合併した1例を経験したので文献的考察を加えて報告する.
A case of pituitary adenoma associated is neurofibromatosis type 1 is reported. On June 6,2000, a 49-year-old man was admitted to the Department of Neurological Surgery, Okayama University Hospital, for bitemporal hemianopsia. Twenty-nine years previously, he had been operated on for a left inguinal tumor that proved to be a neurofibroma. Based on the presence of other manifestations, such as cafe-au-lait spots and subcutaneous nodules, he had been di-agnosed with neurofibromatosis type 1, the same as his father, sister, and daughter.
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