期刊
INTERNAL MEDICINE
卷 58, 期 18, 页码 2689-2693出版社
JAPAN SOC INTERNAL MEDICINE
DOI: 10.2169/internalmedicine.2402-18
关键词
anti-PM/Scl antibody; inflammatory myopathy; Japanese; muscle biopsy; neurology
A 69-year-old Japanese woman presented with mild muscle weakness of the neck and symmetrical proximal parts of the upper and lower limbs. Laboratory tests, needle electromyography, and a muscle biopsy revealed inflammatory myopathy with an apparent clinical classification of polymyositis and positive findings for anti-PM/Scl-75 antibody. This antibody is rare among Japanese populations, and most Japanese patients with the antibody are not classified with the inflammatory myopathy seen in polymyositis. The muscle biopsy also showed marked necrotic and regenerative fibers. We need to collectively investigate patients with the potential to develop this disease, and to identify any unique characteristics for Asian populations, including Japanese.
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