Table 1.

Histological specification of malignant pleural mesothelioma [23]

Epithelioid	Sarcomatoid	Biphasic mixed
– Tubulopapillary – Acinar – Glandular – Adenomatoid – Solid epithelioid patterns – Small cell – Oat cell Differential diagnosis: metastatic carcinomas and other epithelioid tumors	Mimic malignant mesenchymal tumors: leiomyosarcoma synovial sarcoma Desmoplastic mesothelioma bland tumor cells Differential diagnosis: sarcomatoid carcinoma and other sarcomas	Combination of all epithelioid and sarcomatoid features Differential diagnosis: Synovial sarcoma, other mixed or biphasic tumors