Malignant Mesothelioma of the Pericardium: A Report of Two Different Presentations
Figure 2
Malignant mesothelioma, biphasic type. A combination of epithelioid and sarcomatoid patterns (hematoxylin-eosin, original magnifications ×10 (a), ×100 (b)) and immunohistochemistry stains with calretinin (c) and TTF1 (d), original magnifications ×40. The neoplastic cells were arranged in sheets of epithelioid cells ((b), left) and interlacing fascicles of spindle cells ((b), right). Neoplastic cells expressed strong nuclear calretinin staining with heterogeneous cytoplasmic staining (c). Immunohistochemistry stain for TTF1 was negative (d).
