Small cell lung cancer and interstitial pneumonia associated with anti‐transcriptional intermediary factor‐1γ‐positive dermatomyositis

Antibodies to transcriptional intermediary factor‐1γ (TIF‐1γ) are strongly associated with malignancy in patients with dermatomyositis but a relatively low risk for interstitial lung disease. We report the case of a 68‐year‐old female with small cell lung cancer (SCLC) and interstitial pneumonia who was diagnosed first with dermatomyositis positive for serum anti‐TIF‐1γ antibodies. Because interstitial pneumonia co‐existed, she was treated with...