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Chronic myositis with cardiomyopathy and respiratory failure associated with mild form of organ-specific autoimmune diseases

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Abstract

We report the four patients with chronic myositis characterized by a very slow progression with cardiomyopathy and frequently with marked respiratory muscle weakness associated with other organ-specific autoimmune diseases such as primary biliary cirrhosis. The histopathology of the muscle showed many degenerative and regenerative fibers, but inflammatory-cell infiltration were minimal. The patients showed favorable response to high-dose corticosteroid treatment. Because of these clinical features, these patients are sometimes misdiagnosed as muscular dystrophy and not treated properly. It is important to distinguish this type of treatable myositis.

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Correspondence to K. Tanaka.

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Tanaka, K., Sato, A., Kasuga, K. et al. Chronic myositis with cardiomyopathy and respiratory failure associated with mild form of organ-specific autoimmune diseases. Clin Rheumatol 26, 1917–1919 (2007). https://doi.org/10.1007/s10067-007-0698-7

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  • DOI: https://doi.org/10.1007/s10067-007-0698-7

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