1·The Clinical Manifestations of polymyositis and dermatomyositis vary greatly. It is more difficult to distinguish the mild cases from others.
多发性肌炎、皮肌炎的临床表现多样化，尤其对于轻型患者鉴别诊断更加困难。
2·Objective to study the pathology, the pathogenesis, the effect of treatment and the prognosis of polymyositis and dermatomyositis.
目的探讨多发性肌炎和皮肌炎的病理变化、发病机制、治疗效果和预后。
3·Results 3 patients were women, 1 case with polymyositis.
结果3例患者均为女性，1例合并多发性肌炎。