[The relationship between pleomorphic adenocarcinoma and dermatomyositis (with a case report and review of the literatures)].

The purpose of this article is to improve the understanding of complications of pleomorphic adenocarcinoma, and the possibility of complicated with dermatomyositis. In order to explore whether there is a certain relationship between the two diseases.Reported one patient in our hospital with the diagnosis of pleomorphic adenocarcinoma complicated dermatomyositis, and clarified the diagnosis and treatment of these two diseases during hospitalization. Reviewed the latest clinical literature relevant to pleomorphic adenocarcinoma and dermatomyositis.The patients underwent superficial parotidectomy treatment. The postoperation pathologic and immunohistochemical examination confirmed the diagnosis of pleomorphic adenocarcinoma. Dermatomyositis improved better after the operation.Pleomorphic adenocarcinoma has the possibility of complicated with dermatomyositis which may misdiagnosis in clinical practice. Summarize the latest diagnosis progress of pleomorphic adenocarcinoma and the surgical treatment of the tumor. Also discuss the standards of clinical diagnosis and treatment of dermatomyositis. Analysis there may be a relationship between the two diseases on autoimmune mechanism.