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Figure 1. A 22-year-old Marine underwent evaluation for a knee injury. He had no other symptoms, and the results of physical examination and routine laboratory tests were normal. A chest radiograph showed an anterior mediastinal mass protruding into the right side of the thorax (arrow in Panel A). Serum alpha-fetoprotein and ß-human chorionic gonadotropin levels were normal. A computed tomographic scan of the chest showed a 10 by 7 by 6 cm anterior mediastinal mass with areas of fat, soft tissue, and bone density (arrow in Panel B). At surgery through a median sternotomy, a large mass with grossly . . . [Full Text of this Article] |
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