PMC4915954_01
Chest CT scan image showing a lesion (yellow arrows) in the superior mediastinum that is relatively strongly enhanced by contrast medium.
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The tumor was closely adjacent to other structures, including the aortic arch, brachiocephalic artery, left carotid artery, and trachea, but it was not invading any other tissues (Fig. 1).
(A) The tumor is located adjacent to the aortic arch, brachiocephalic artery, left carotid artery, and trachea. (B, upper) The tumor is a smooth, tan-pink, 6.0 x 1.5 x 1.5 cm mass. (B, lower) No necrosis or abscess was found inside the tumor.
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It was located adjacent to the aortic arch, brachiocephalic artery, left carotid artery, and trachea and behind the left brachiocephalic vein (Fig. 2A). It was a tan-pink color and measured 6.0 x 1.5 x 1.5 cm (Fig. 2B).
Photomicrographs showing lymphoid tissue with follicular hyperplasia. The follicles contain germinal centers are surrounded by follicular small lymphocytes. The germinal centers have multiple capillaries and hyalinization substances (yellow arrow). (A) Low-power view (hematoxylin-eosin, x10). (B) High-power view (hematoxylin-eosin, x20).
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