Cancer and myositis17.
| Factors associated with occult malignancy in patients with idiopathic inflammatory myopathies (IIM). |
| Older age |
| Male sex |
| Dysphagia |
| Skin manifestations: necrosis, periungual erythema, “V” (“shawl”) sign |
| Low C4 levels |
| Anti-p155 (/p140) antibody and absence of other autoantibodies |
| Factors protective for the development of cancer in patients with IIM |
| Interstitial lung disease |
| Antisynthetase and anti-Mi-2 antibodies |
| Low baseline lymphocyte count |