Lipoblastic Differentiation in a Primary Localized Fibrous Mesothelioma of the Peritoneum

Summary Lipoblastic differentiation in fibrous mesotheliomas is an extremely rare occurrence. We present the histological and immunohistochemical features o f a case o f localized paeritoneal mesothelioma with lipoblastic differentiation in an 80-year old man and discuss the differential diagnosis with liposarcoma.