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KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
TERMINOLOGY
Synonyms
Idiopathic inflammatory myopathy
Definitions
Inflammation and damage to skeletal muscle with ↑ in muscle-derived proteins (creatine kinase)
Diffuse: Polymyositis (PM), dermatomyositis (DM)
Focal patterns: Inclusion body myositis (IBM), focal myositis (FM; may progress to PM)
IMAGING
General Features
Imaging Recommendations
Radiographic Findings
CT Findings
MR Findings
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
Selected References
Delavan JA et al: Gemcitabine-induced radiation recall myositis. Skeletal Radiol. 44(3):451-5, 2015
Jarraya M et al: Atypical proliferative myositis: original MR description with pathologic correlation: case report. Skeletal Radiol. 43(8):1155-9, 2014
Yoshida K et al: Fasciitis as a common lesion of dermatomyositis, demonstrated early after disease onset by en bloc biopsy combined with magnetic resonance imaging. Arthritis Rheum. 62(12):3751-9, 2010
Gardner-Medwin JM et al: MRI in juvenile idiopathic arthritis and juvenile dermatomyositis. Ann N Y Acad Sci. 1154:52-83, 2009
Schulze M et al: MRI findings in inflammatory muscle diseases and their noninflammatory mimics. AJR Am J Roentgenol. 192(6):1708-16, 2009
Tomasová Studynková J et al: The role of MRI in the assessment of polymyositis and dermatomyositis. Rheumatology (Oxford). 46(7):1174-9, 2007
Chan WP et al: MR imaging of primary skeletal muscle diseases in children. AJR Am J Roentgenol. 179(4):989-97, 2002
O'Connell MJ et al: Whole-body MR imaging in the diagnosis of polymyositis. AJR Am J Roentgenol. 179(4):967-71, 2002
Adams EM et al: The idiopathic inflammatory myopathies: spectrum of MR imaging findings. Radiographics. 15(3):563-74, 1995
Related Anatomy
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Related Differential Diagnoses
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
Top Differential Diagnoses
Pathology
TERMINOLOGY
Synonyms
Idiopathic inflammatory myopathy
Definitions
Inflammation and damage to skeletal muscle with ↑ in muscle-derived proteins (creatine kinase)
Diffuse: Polymyositis (PM), dermatomyositis (DM)
Focal patterns: Inclusion body myositis (IBM), focal myositis (FM; may progress to PM)
IMAGING
General Features
Imaging Recommendations
Radiographic Findings
CT Findings
MR Findings
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Microscopic Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
Selected References
Delavan JA et al: Gemcitabine-induced radiation recall myositis. Skeletal Radiol. 44(3):451-5, 2015
Jarraya M et al: Atypical proliferative myositis: original MR description with pathologic correlation: case report. Skeletal Radiol. 43(8):1155-9, 2014
Yoshida K et al: Fasciitis as a common lesion of dermatomyositis, demonstrated early after disease onset by en bloc biopsy combined with magnetic resonance imaging. Arthritis Rheum. 62(12):3751-9, 2010
Gardner-Medwin JM et al: MRI in juvenile idiopathic arthritis and juvenile dermatomyositis. Ann N Y Acad Sci. 1154:52-83, 2009
Schulze M et al: MRI findings in inflammatory muscle diseases and their noninflammatory mimics. AJR Am J Roentgenol. 192(6):1708-16, 2009
Tomasová Studynková J et al: The role of MRI in the assessment of polymyositis and dermatomyositis. Rheumatology (Oxford). 46(7):1174-9, 2007
Chan WP et al: MR imaging of primary skeletal muscle diseases in children. AJR Am J Roentgenol. 179(4):989-97, 2002
O'Connell MJ et al: Whole-body MR imaging in the diagnosis of polymyositis. AJR Am J Roentgenol. 179(4):967-71, 2002
Adams EM et al: The idiopathic inflammatory myopathies: spectrum of MR imaging findings. Radiographics. 15(3):563-74, 1995
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