acute dermatomyositis and polymyositis的用法和样例：
- Objective To investigate the clinical features and prognosis of dermatomyositis and polymyositis associated with malignancy.
- Dermatomyositis and Polymyositis Complicated by Infections and Their Risk Factor Analysis
- Several immune system cell types and processes have been recently identified in muscle in inclusion body myositis, dermatomyositis, and polymyositis.
- Objective To identify correlative factors for early diagnosis of patients with dermatomyositis (DM) and polymyositis (PM) associated with tumor.