Journal of clinical neuromuscular disease · 2016
Chronic Myopathy Associated With Anti-Signal Recognition Particle Antibodies Can Be Misdiagnosed As Facioscapulohumeral Muscular Dystrophy.
СтатьяНазвание и аннотация: Перевод в очереди
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Ikeda Kensuke, Mori-Yoshimura Madoka, Yamamoto Toshiyuki, Sonoo Masahiro, Suzuki Shigeaki, Kondo Yoshiyuki, Nakamura Harumasa, Mitsuhashi Kana, Maeda Meiko Hashimoto, Shimizu Jun, Hayashi Yukiko K, Nishino Ichizo, Oya Yasushi, Murata Miho
Аннотация
OBJECTIVES: To report cases of chronic autoimmune necrotizing myopathy with anti-signal recognition particle antibodies (anti-SRP myopathy) initially misdiagnosed as muscular dystrophy, in particular, facioscapulohumeral muscular dystrophy (FSHD).
METHODS: Medical records of patients with anti-SRP myopathy in our institution were retrospectively reviewed.
RESULTS: All 6 patients were initially diagnosed with muscular dystrophy because of the long-term clinical course and lack of inflammation on biopsy; 5 were diagnosed with FSHD based on a winged scapula. However, the following features suggested an alternative diagnosis, leading to anti-SRP antibody measurement: (1) lack of family history, (2) lack of facial involvement and asymmetry, (3) prominent dysphagia, and (4) profuse spontaneous activities on needle electromyography. All patients showed improvement with immunomodulating therapy.
CONCLUSIONS: Anti-SRP antibody measurement should be considered in patients diagnosed with FSHD if they present with diagnostic hallmarks of anti-SRP myopathy listed above, to avoid oversight of this potentially treatable disorder.
METHODS: Medical records of patients with anti-SRP myopathy in our institution were retrospectively reviewed.
RESULTS: All 6 patients were initially diagnosed with muscular dystrophy because of the long-term clinical course and lack of inflammation on biopsy; 5 were diagnosed with FSHD based on a winged scapula. However, the following features suggested an alternative diagnosis, leading to anti-SRP antibody measurement: (1) lack of family history, (2) lack of facial involvement and asymmetry, (3) prominent dysphagia, and (4) profuse spontaneous activities on needle electromyography. All patients showed improvement with immunomodulating therapy.
CONCLUSIONS: Anti-SRP antibody measurement should be considered in patients diagnosed with FSHD if they present with diagnostic hallmarks of anti-SRP myopathy listed above, to avoid oversight of this potentially treatable disorder.