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Keywords:

  • anti-phospholipid syndrome;
  • Castleman disease;
  • interleukin-6;
  • myasthenia gravis;
  • pemphigus vulgaris

Introduction: Myasthenia gravis is an autoimmune disease marked by neuromuscular transmission failure at the neuromuscular junction. Castleman disease is a rare lymphoproliferative disease characterized by non-cancerous angiofolicular hyperplasia of lymphatic tissue. Methods and results: We describe a young man with rapid, successive manifestations of myasthenia gravis, a solitary form of Castleman disease, pemphigus vulgaris, and anti-phospholipid syndrome, which resulted in 2 ischemic cerebrovascular events that caused a severe central neurological deficit. Discussion: We were unable to find a similar case in the literature, but we hypothesize that the temporal concidence of these clinical entities may be related to a common immunological pathway, such as B-cell activation. Therefore, we treated the patient with an immunosuppressant and anticoagulant treatment, as well as rituximab, a monoclonal antibody therapy against CD20+. Muscle Nerve 47:447-451, 2013