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  • Title: [A case of myasthenia gravis associated with systemic lupus erythematosus and pemphigus erythematosus].
    Author: Itoh K, Umehara F, Iwasaki H, Kanda A, Arimura K.
    Journal: Rinsho Shinkeigaku; 1997 Feb; 37(2):111-4. PubMed ID: 9164141.
    Abstract:
    A 34-year-old woman was admitted to our hospital because of ptosis, dysarthria, muscle weakness of upper limbs and skin lesions. At the age of 22 years, she was diagnosed as having systemic lupus erythematosus (SLE) due to the presence of arthritis and high titer of antinuclear antibody. On admission, the high antiacetylcholine receptor antibody titer, along with the positive tensilon test and electromyography established a diagnosis of myasthenia gravis (MG). The demonstration of anti-intercellular antibodies both in cutaneous tissue and blood confirmed the diagnosis of pemphigus. MRI showed hypertrophic thymus. After thymectomy, the myasthenic symptoms aggravated and SLE and pemphigus erythematosus relapsed despite anti-cholinesterase treatment with plasmapheresis. She was then placed on corticosteroid therapy with an improvement of her all symptoms. This very rare case of MG associated with SLE and pemphigus erythematosus suggests that these diseases share common immunological abnormalities.
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