Dermatomyositis Anteceding Lung Adenocarcinoma.

Dermatomyositis is often presented as paraneoplastic syndrome. The diagnosis of dermatomyositis can prompt clinicians to further investigate the underlying cause, in particular malignancy. This case report illustrates the association of lung adenocarcinoma and dermatomyositis with antecedent presentation of cutaneous and musculoskeletal manifestations, one year prior to the diagnosis of carcinoma.