Abstract
A 68-year-old woman with dyspnea, recurrent chest pain, and paroxysmal atrial fibrillation had, as indicated by chest computed tomography, a 42 × 44 × 53 mm mediastinal solid lesion with fluid cystic areas compressing the right atrium (Figure 1 [Ao, ascending aorta; At, right atrium; M, intrapericardial mass]), with a maximum standard uptake value of 1.5 at positron emission tomography scan. Considering the site of the mass and the radiologic and metabolic features, transthoracic computed tomography-guided needle biopsy was not performed, and surgical removal of the mass through right video-assisted thoracoscopy was scheduled instead.
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