Six patients with myasthenia gravis and suspected thymoma underwent radiologic investigation using plain chest radiography, conventional anterior mediastinal tomography, and computed tomography. All underwent exploratory thoractomy within 1 month of the radiologic workup. In three of the five cases that proved to be thymoma, CT yielded significant diagnostic information that bore directly on the management and/or prognosis of the patient. We therefore believe that CT may be a valuable adjunct in the radiologic investigation of the patient with myasthenia gravis.
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Mink et al. (1978) studied this question.