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Electron Microscopy for Pathologists: Muscle Pathology
D2. Inclusion Body Myositis continued

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Image 5 of 7 Myelin figures. (Low magnification) Inclusion body myositis is also characterized by disruption of myofibrils with subsarcolemmal inclusions consisting of myelin figures (membranous whorls or myeloid bodies).

 

 

Inclusion body myositis--myelin figures
   
Image 6 of 7 Myelin figures. (High magnification) At higher power, a variety of myelin figures are displayed. Inclusion body myositis--myelin figures
   

Image 7 of 7 Myelin figures. In addition to fibrillary material, myelin figures (membranous whorls or myeloid bodies) are seen in cases of inclusion body myopathy. In this case, the myofibrils have been disrupted by the presence of multiple myelin figures of varying size and shape.

 

 

Myelin figures

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