Figure 3: Histological specimen of the infiltration of the chest wall. The tumour consists of medium sized to large lymphoma cells with round to slightly pleomorphic nuclei with plasmoblastic features, the cells appear more uniform in the histological section than in the cytospin preparation with round or ovoid nuclei and more or less abundant basophilic cytoplasm. Cytology [above left] is reminiscent of primary effusion lymphoma, however the clinical presentation distinguished this form of lymphoma from primary lymphoma by a large pleural mass and dissemination.