Whereas the coexistence of different autoimmune or rheumatologic
diseases with myasthenia gravis is well documented, the combination of
myasthenia with sarcoidosis is extremely rare. There very few case
reports of patients suffering from these two immune-mediated diseases.
Nearly all had acetylcholine receptor antibodies. As far as we know
myasthenia gravis with antibodies to muscle-specific tyrosine
kinase-MuSK-has not been associated with any form of sarcoidosis. We
present probably the first case of MuSK-positive myasthenia gravis with
concurrent, asymptomatic pulmonary sarcoidosis. (c) 2008 Published by
Elsevier B.V
