镜下观察显示心肌炎（100%）伴随单核细胞浸润、纤维化（100%）、非坏死性肉芽肿（62%）和巨细胞（38%）。

Microscopic evaluation revealed myocarditis (100% of cases) characterized by mononuclear cell infiltration, fibrosis (100%), nonnecrotizing granulomas (62%), and giant cells (38%).

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镜下观察显示心肌炎（100%）伴随单核细胞浸润、纤维化（100%）、非坏死性肉芽肿（62%）和巨细胞（38%）。

Microscopic evaluation revealed myocarditis (100% of cases) characterized by mononuclear cell infiltration, fibrosis (100%), nonnecrotizing granulomas (62%), and giant cells (38%).

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