Associations of PM/DM Associated Malignancy with Each Factors.

PM = Polymyostis; DM = Dermatomyositis; ILD = Interstitial lung disease; ESR = Erythrocyte sedimentation rate; CK = Creatine kinase; CRP = C-reactive protein; AST = Aspartate aminotransferase; ALT = Alanine aminotransferase; LDH = Lactate dehydrogenase; ANA = Antinuclear antibody; ENA = extractable nuclear antigen; NA = not available.*PM/DM: the results of all studies (studies that included PM and DM combined as research subjects and that included DM patients only).△Time between the appearance of initial symptoms and the diagnosis of PM/DM was made.□Only one study reported ESR using a cutoff point of 35.☆elevated: higher than normal level.