Biphasic histopathology is seen in -

A biphasic tumor is a truly histological term that refers to neoplastic tissue which is characterized by two different cellular elements. Biphasic mesothelioma is a mixed type of mesothelioma, which has both epithelioid and sarcomatoid type cells present. The cells usually arrange in separate groups within a biphasic tumor, which is why biopsies are typically taken from different pas of the tumor.