Primary lymphoma of the liver - A complex diagnosis

Figure 4 Histopathological results. A: Hematoxylin eosin staining (150 ×) shows a large cell malignancy with mostly loose tumor cells with nuclear polymorphism. Furthermore, frequent giant nuclear bodies with macro-nucleoli and numerous cell mitoses. No central necrosis is observed; B: A photomicrograph (400 ×) showing lymphocytic tumor cells which are positive for CD20 staining around the plasma membrane, indicating non-Hodgkin lymphoma of B-cell origin.