Anti‐cytokeratin 5/6: a positive marker for epithelioid mesothelioma

Aims : Previous studies using frozen material have suggested that cytokeratin 5 is expressed by pleural mesothelioma but not by adenocarcinoma. In the present study, reactions for cytokeratins 5 and 6 were investigated in 33 pleural mesotheliomas and 27 secondary adenocarcinomas of the pleura using formalin‐fixed, paraffin‐embedded material and a commercially available antibody (anti‐cytokeratin 5/6). Methods and results : All of the...