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Figure 1: (a) Large slightly H_shaped anterior mediastinal mass, partially capsulated with tags of adipose tissue; the mass had a yellowish brown cut surface and had encased (b) the right RIV and left innominate (LIV), veins, and arch of aorta, and (c) the proximal descending thoracic aorta (DTA) and tracheo_bronchial tree (LB = left bronchus, RB = right bronchus, T = trachea); (d) granulomatous inflammation amidst extensive sclerosis (H and E × 250); and (e) Langhan's giant cells (arrows) accompanied by lymphocytes and few plasma cells (H and E × 400)

Figure 1: (a) Large slightly H_shaped anterior mediastinal mass, partially capsulated with tags of adipose tissue; the mass had a yellowish brown cut surface and had encased (b) the right RIV and left innominate (LIV), veins, and arch of aorta, and (c) the proximal descending thoracic aorta (DTA) and tracheo_bronchial tree (LB = left bronchus, RB = right bronchus, T = trachea); (d) granulomatous inflammation amidst extensive sclerosis (H and E × 250); and (e) Langhan's giant cells (arrows) accompanied by lymphocytes and few plasma cells (H and E × 400)