In our first case of epithelioid mesothelioma, the neoplastic cells showed cytokeratin 5/6 (CK5/6), calretinin, and Wilms‐tumor‐1 (WT1) expression, while remaining negative with thyroid transcription factor‐1 (TTF‐1). Here, TTF1 is linked to malignant epithelioid mesothelioma.