Anomalies in perifascicular muscle fibers as an differential-diagnostic criterion. I. Perifascicular atrophy in inflammatory myopathies.
Thirty-four cases of inflammatory muscle disease (21% from a collective of 160 inflammatory myopathies) were suitable for morphometric measurements. A statistical analysis of our data yields a perifascicular fiber atrophy (PA) in 50% of these cases. Morphometry was able to detect also cases with significant PA which were evaluated subjectively as normal. In dermatomyositis, the finding of a PA was more frequent than in other subgroups of inflammatory myopathies. There was also an accumulation of PA in patients with a paraneoplastic polymyositis. It could not be confirmed that PA occurs more frequent in dermatomyositis of children.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009133:Muscular Atrophy / Q000473:pathology*; D009220:Myositis / Q000175:diagnosis / Q000473:pathology*