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要旨 肺の多発空洞性病変を呈した若年者サルコイドーシスの1例を経験した.19歳の男性で,頸部リンパ節の腫脹を自覚.胸部CTで両肺野のびまん性の小粒状影,両上肺野の多発空洞性病変を認め,両側肺門リンパ節の腫脹もみられた.また,ぶどう膜炎,血清ACE値上昇があり,経気管支肺生検および頸部リンパ節生検で非乾酪性類上皮細胞性肉芽腫を認めた.感染症,気腫性変化などの空洞形成を呈する疾患は否定的であり,サルコイドーシスによる原発性空洞性病変と考えられた.網膜周囲静脈炎,眼底出血を伴うぶどう膜炎であり,胸部陰影も改善が乏しいことから,プレドニゾロン30mg/日の投与を開始した.半年後の胸部CTでは小粒状影は改善し,空洞も消退傾向にあった.サルコイドーシスによる空洞性病変に対するステロイドの反応性は乏しいとされているが,本症例ではステロイドが著効しており,興味ある症例と考えられた.
A 19-year-old male was admitted for further examination of cervical lymphadenopathy. Chest CT scan revealed bilateral hilar lymphadenopathy, micronodular lesions and multiple cavitary lesions. Moreover, uveitis and elevation of serum angiotensin-converting enzyme level were observed. Pathological findings of transbronchial lung biopsy and cervical lymph node biopsy disclosed non-caseating epithelioid cell granulomas without mycobacterial or fungal infection. From these findings, we diagnosed that the cavitary lesions were due to sarcoidosis. After treatment with prednisolone (30mg/day), bilateral hilar lymphadenopathy, micronodular lesions and multiple cavitary lesions showed improvement. Corticosteroid therapy is not effective for primary pulmonary cavitation in sarcoidosis. This is a rare and instructive case of sarcoidosis with primary pulmonary multiple cavitations that was effectively treated by corticosteroid therapy.
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