图1 术后伤口脓肿分支杆菌感染。化脓性结核样肉芽肿，肉芽肿中央为小脓肿，周围类上皮细胞和郎罕巨细胞增生 HE×100 图2 术后伤口脓肿分支杆菌感染早期。在化脓性炎症背景上，见多个不典型结核样肉芽肿，由少量类上皮细胞及郎罕巨细胞组成 HE×100 图3 术后切口脓肿分支杆菌感染。引流区域淋巴结内见两种形态肉芽肿，左上为增殖性结核样肉芽肿，右下为化脓性结核样肉芽肿 HE×40
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