SAT0331 CHIPPING AWAY AT POLYMYOSITIS: A RETROSPECTIVE REVIEW AT A TERTIARY MYOSITIS CENTRE

Background: Since first described, our understanding of polymyositis (PM) has evolved substantially. Patients previously diagnosed with PM may now be better described as having an alternative diagnosis, including immune-mediated necrotizing myopathy (IMNM), connective tissue disease overlap myositis (CTD-OM), anti-synthetase syndrome (ASS) or inclusion body myositis (IBM). Objectives: To apply the current understanding of IIM subtypes to...