Abstract:A 72-year-old woman was admitted to a local hospital with general fatigue, ptosis and dysarthria. Her anti-AchR antibody titer was high, so myasthenia gravis was diagnosed. She was given a cholinesterase inhibitor, but her symptoms did not improve. CT and MRI scans revealed a mass in the anterior mediastinum infiltrating the superior vena cava (SVC) and the right atrium (RA) . The diagnosis was an invasive thymoma extending into the SVC and the RA. Moreover, there was a mass in the right middle lobe of her lun… Show more
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