Search for: [Abstract = "A 82\-year\-old patient with suspected polymyositis was examined. A biceps biopsy was performed. Electronmicroscopy analysis revealed ultrastructurally unchanged muscle fibers, characterized by preserved sarcomeres structure and normal mitochondria. Atrophied fibers, characterized by smaller diameter, accumulation of cell nuclei, disrupture\/atrophy of the contractile apparatus and sometimes containing deposits of lipofuscin were also observed.Some of the fibers also showed abnormalities in the nuclei structure and \/ or damage to myofibrils. Infiltration of lymphocytes and plasma cells were observed in the endomysium.Microscopic image of the biopsy may suggest a past inflammatory process ."]

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