The value of computed tomography in myasthenia gravis

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Abstract
In a 5-yr study, 19 patients with myasthenia gravis were studied by computed tomography (CT) and underwent thymectomy. CT was accurate in detecting the 9 true thymic masses but could not differentiate thymomas from nonthymomatous masses, including thymic cysts. No thymoma was found in a patient under 25 yr of age. In 1 case, the 18-s scanner could not differentiate a large gland from a thymoma. In 8 cases, glands with histologic thymic hyperplasia and histologically normal thymus appeared to be similar and could not be differentiated by CT.