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Myasthenia Gravis

Repeat X-ray and CT Scan of Thymus



Generally, how often do you feel that MG patients should get a chest X-ray and/or CT scan of the chest to be sure that there is not an enlarged thymus or thymoma present?

I am asking this question for those of us who have not had a thymectomy and who had a normal chest X-ray and CT scan after a diagnosis of MG.

Thank you for your input.


There is no absolute guideline or study that can absolutely answer your question. I can say that a chest x-ray does not need to be done. It is an inadequate study for this purpose. If you are in remission (doing well, on no medications) or well-controlled on minimal medications or have only ocular MG, I do not think any study is necessary. I obtain a repeat CT of the chest, if a patient has moderate to severe MG not responding to medications. 

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Response by:

Henry J Kaminski, MD Henry J Kaminski, MD
Formerly, Professor of Neurology
School of Medicine
Case Western Reserve University