The association between malignancy and dermato-/polymyositis has been largely described and confirmed by numerous epidemiological studies. The temporal relationship between the two pathologic conditions can vary: malignancy may occur before, at the same time or following the diagnosis of myositis. Myositis debut requires a doctor of high vigilance in terms of the likelihood of developing cancer. The article presents the clinical features of paraneoplastic myopathies and clinical observation.

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