The presence of cellular inflammatory infiltrates with invasion of non-necrotic muscle fibres has become a prerequisite for the diagnosis of polymyositis, but a structured literature search shows that the research evidence is insufficiently strong for this histological feature to be used as a diagnostic criterion
No takes yet. Share an insight, caveat, or question.
Hengstman et al. (2004) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: