Japanese
English
- 有料閲覧
- Abstract 文献概要
- 1ページ目 Look Inside
潜在性心サルコイドーシスの剖検例について,巨細胞性心筋炎との組織学的鑑別も加え報告する。症例は68歳の女性で,急性心筋硬塞およびくも膜下出血のため,3日の経過で死亡した。剖検では左室前壁の急性心筋梗塞病巣に加え,左室側壁および心室中隔に白色線維性病変が見られた。組織学的にはリンパ球や類上皮細胞の浸潤を伴う線維性肉芽組織からなり,Langhans型および異物型の多核巨細胞も散見された。典型的な類上皮細胞肉芽腫が気管分岐部リンパ節,肝,脾に認められたため,心病変を心サルコイドーシスと診断した。心病変の多核巨細胞には横紋は認められなかったが,免疫組織学的にはミオグロビン陽性のものとリゾチーム陽性のものが存在した。したがって,巨細胞が心筋由来でないことが心サルコイドーシスの診断基準にならないと考えられた。本症例では心サルコイドーシスと心以外にも肉芽腫病変を伴う巨細胞性心筋炎の組織学的鑑別は心病変のみでは困難と思われた。
We report a case of latent cardiac sarcoidosis in re-ference to differential diagnosis from giant cell myo-carditis.
A 68-year-old woman succumbed to subarachnoid hemorrhage and acute myocardial infarction within a period of 3 days. Autopsy revealed white fibrotic lesions in the lateral wall of the left ventricle and interventricular septum of the heart in addition to acute myocardial infarction of the anterior wall. Hi-stology showed fibrotic granulomatous lesions with infiltration of lymphocytes and epithelioid cells. Many multinucleated giant cells of Langhans and fo-reign body types were scattered among these lesions. There was no lesion in the bilateral hilar lymph no-des, but typical epithelioid granuloma was noticed in the lymph node of the carina, liver, and spleen. So we concluded that the heart lesion was a case of car-diac sarcoidosis. Striation could not be seen in the multinucleated giant cells of the cardiac sarcoid le-sion, and, using light microscopy, it seemed to us that these cells had no relation to the cardiac mus-cles.
However, by immunohistochemistry (PAP method) some giant cells tested positive for myoglobin, and others tested positive for lysozyme. The fact that giant cells are not always derived from the cardiac muscule can't be used, as a criterion for the diag-nosis of cardiac sarcoidosis.
Giant cells in the lung and lymph nodes tested po-sitive only for lysozyme.
Hence, using only cardiac histology, it is difficult to make a differential diagnosis between cardiac sar-coidosis and giant cell myocarditis, especially in cases where there is multiple organ involvement.
Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.