Immunohistochemical markers, that is, pankeratin, keratin 5/6, calretinin, and Wilms Tumor-1 (WT-1), are useful to confirm mesothelioma while carcinoembryonic antigen, CD15 and thyroid transcription factor-1 (TTF-1) are negative markers [1]. This evidence concerns the gene WT1 and mesothelioma.