Results: Sample from the patient showed necrosis, degeneration, perifascicular atrophy, and inflammatory cells infiltrating which expressed LCA.

• 结果：患者肌组织病理特点为肌纤维变性坏死，明显的束周萎缩和炎细胞浸润，浸润的细胞LCA表达阳性，诊断为皮肌炎。