Anti-TIF-1α/γ Antibody-Positive Dermatomyositis Associated With Metastatic Prostatic Adenocarcinoma.

Dermatomyositis (DM) is an autoimmune myopathy characterized by proximal muscle weakness and distinct skin findings. DM is associated with an increased risk of malignancy in adults. We describe a case of dermatomyositis with unusually severe oropharyngeal dysphagia and respiratory muscle weakness on presentation, who was found to have underlying metastatic prostate cancer.