(A) Photomicrograph of pleural biopsy showing malignant mesothelioma. (B) A positive stain is brown. The immunohistochemical panel supports the diagnosis of malignant mesothelioma with positive nuclear stain for Wilms tumor protein (WT-1). (C) Positive nuclear and cytoplasmic stain for calretinin. (D) Positive stain for D2-40. (E) Negative stain for transcription termination factor-1 (TTF-1). (F) Negative stain for MOC31.
Courtesy of Leslie A Litzky, MD.
Graphic 119314 Version 1.0
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