A 41-year-old woman presents with progressive ptosis and intermittent diplopia worsening throughout the day. She reports difficulty sustaining arm elevation above her head after prolonged activity. Vital signs: BP 118/76, HR 82, RR 14, Temp 37°C, SpO2 98% on room air. Edrophonium transiently improves her symptoms. Serum anti-acetylcholine receptor antibodies are positive. Chest CT is most likely to demonstrate which of the following associated findings?

1. A)Calcified pleural plaques
2. B)Hilar lymphadenopathy with noncaseating granulomas
3. C)Anterior mediastinal thymic abnormalityGABARITO
4. D)Apical cavitary lesion with caseation
5. E)Posterior mediastinal neuroblastoma