Imaging The Myasthenia Gravis

A chest X-ray is frequently performed; it may point towards alternative diagnoses (e.g., Lambert-Eaton syndrome due to a lung tumor) and comorbidity. It may also identify widening of the mediastinum suggestive of thymoma, but computed tomography (CT) or magnetic resonance imaging (MRI) are more sensitive ways to identify thymomas and are generally done for this reason. MRI of the cranium and orbits may also be performed to exclude compressive and inflammatory lesions of the cranial nerves and ocular muscles.

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