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Myasthenia gravis developing after discovery of thymoma
N Wakata1, H Fukuya, M Niizuma
1Fourth Department of Internal Medicine, Toho University, Tokyo, Japan.
Clinical Neurology and Neurosurgery
|January 1, 1992
Abstract:
We report 4 cases of myasthenia gravis in which myasthenic symptoms developed after a thymoma was known to be present. They include 3 invasive thymomas and one thymoma. In 3 of them, myasthenic symptoms developed 2-7 months after removal of the thymoma; in 1 case, myasthenic symptoms developed 11 years after the thymoma was known to be present. We also discuss here the possible pathogenetic mechanism of post-thymomectomic myasthenia gravis, and propose that it is due to the natural course of the disease.