Fig. 6
Histopathologic evaluation of the 2.2 cm anterior mediastinal nodule revealed diagnostic features of benign thymic hyperplasia with no evidence of recurrent lymphoma. A H&E-stained tissue sections show fragments of thymic tissue and fibroadipose tissue (H&E, 2.5 ×). B At higher magnification, the thymic tissue shows normal cortical and medullary architecture with occasional Hassall's corpuscles. Atypical cells (including Hodgkin/Reed-Sternberg cells) are not observed (H&E, 20 ×)