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Figure 1: Imaging and histopathology of thymoma. (a) Axial contrast CT chest shows a well-defined anterior mediastinal mass (*) with heterogeneous enhancement, hypodense areas, and calcification (linear arrow) (Ao = aorta, SVC = superior vena cava, PA = pulmonary artery). (b-d) Thymoma with epithelial cells intermixed with lymphocytes (b). The epithelial cells express pan cytokeratin (c) and lymphocytes are highlighted by terminal deoxynucleotidyl transferase (d). (Hematoxylin and eosin (b), immunoperoxidase (c and d) original magnification 200×. Scale Bars for all: 50 μm)

Figure 1: Imaging and histopathology of thymoma. (a) Axial contrast CT chest shows a well-defined anterior mediastinal mass (*) with heterogeneous enhancement, hypodense areas, and calcification (linear arrow) (Ao = aorta, SVC = superior vena cava, PA = pulmonary artery). (b-d) Thymoma with epithelial cells intermixed with lymphocytes (b). The epithelial cells express pan cytokeratin (c) and lymphocytes are highlighted by terminal deoxynucleotidyl transferase (d). (Hematoxylin and eosin (b), immunoperoxidase (c and d) original magnification 200×. Scale Bars for all: 50 μm)