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サルコイドーシスを合併し,髄膜脳炎を呈したSjögren症候群例を報告する。症例はサルコイドーシスの既往を持つ64歳女性。発熱,意識障害にて入院。髄膜刺激症状を示し,抗核抗体,抗SS-A抗体,抗SS-B抗体陽性,髄液中の細胞数および蛋白増加,髄液中のInterleukin−6(IL−6)は高値を認めた。耳下腺造影ではapple tree signを示し,髄液中のウイルス抗体およびACEが陰性であり脳底部病変などを認めないことより,Sjögren症候群による髄膜脳炎と診断した。症状改善とともに髄液中のIL−6は正常化した。以上より,髄液中のIL−6は中枢神経症状を合併したSjögren症候群の病勢把握に有用と考えた。
A 64-year-old Japanese woman with sarcoidosis and primary Sjögren's syndrome was admitted to our hospital in January 1998 for consciousness loss. Physi-cal examination revealed meningeal signs and hyper-reflexia in the lower limbs. Laboratory investigations showed hypergammaglobulinemia and high titers of autoantibodies such as RF, ANA, and SS-A and SS-B antibody. In addition, she had keratoconjunctivitis, and an apple-tree pattern was observed in sialography, but serum ACE was normal. In the cerebrospinal fluid (CSF), the cell count, total protein, and interleukin 6 (IL-6) were increased, but ACE in CSF was normal.
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