A malignant neoplasm arising from mesothelial cells in the pleura. It is characterized by the presence of neoplastic epithelioid cells and sarcomatoid features. The disease is Monarch Disease Ontology term MONDO_0006109 (malignant biphasic mesothelioma). Also known as: biphasic mesothelioma, malignant biphasic mesothelioma, malignant, malignant mixed mesothelioma, mesothelioma, biphasic, malignant, mesothelioma, biphasic, malignant (morphologic abnormality), mixed mesothelioma.