PMC4531752_01
Chest CT scan. It shows 3x4x5 cm-sized low-attenuated homogenous oval shaped mass with sharp margin at the anterior mediastinum. It is diagnosed as thymoma radiologically.
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The mass was diagnosed as thymoma, radiologically (Figure 1).
Histopathology of the liver. It shows distorted lobular architecture and widening of portal tracts by chronic inflammatory cell infiltration with foci of piecemeal necrosis and fibrosis (H&E, x200).
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Thus it was diagnosed as chronic active hepatitis (Figure 2).
Histopathology of the thymus. It shows well-defined tumor tissue composed of solid sheets of thymic epithelial cells and scanty amount of lymphoid cells with frequent cystic change. A few Hassal's corpuscles are seen. The surrounding thymic tissue shows follicular hyperplasia (H&E, x200).
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Histology confirmed that the thymoma was encapsulated, non-invasive and mixed type (Figure 3).