Aliya Noor Husain, Thomas V Colby, Nelson G Ordóñez, Timothy Craig Allen, Richard Luther Attanoos, Mary Beth Beasley, Kelly Jo Butnor, Lucian R Chirieac, Andrew M Churg, Sanja Dacic, Françoise Galateau-Sallé, Allen Gibbs, Allen M Gown, Thomas Krausz, Leslie Anne Litzky, Alberto Marchevsky, Andrew G Nicholson, Victor Louis Roggli, Anupama K Sharma, William D Travis, Ann E Walts, Mark R Wick
CONTEXT: - Malignant mesothelioma (MM) is an uncommon tumor that can be difficult to diagnose. OBJECTIVE: - To provide updated, practical guidelines for the pathologic diagnosis of MM. DATA SOURCES: - Pathologists involved in the International Mesothelioma Interest Group and others with an interest and expertise in the field contributed to this update. Reference material included up-to-date, peer-reviewed publications and textbooks. CONCLUSIONS: - There was discussion and consensus opinion regarding guidelines for (1) distinguishing benign from malignant mesothelial proliferations (both epithelioid and spindle cell lesions), (2) cytologic diagnosis of MM, (3) recognition of the key histologic features of pleural and peritoneal MM, (4) use of histochemical and immunohistochemical stains in the diagnosis and differential diagnosis of MM, (5) differentiating epithelioid MM from various carcinomas (lung, breast, ovarian, and colonic adenocarcinomas, and squamous cell and renal cell carcinomas), (6) diagnosis of sarcomatoid MM, (7) use of molecular markers in the diagnosis of MM, (8) electron microscopy in the diagnosis of MM, and (9) some caveats and pitfalls in the diagnosis of MM...
January 2018: Archives of Pathology & Laboratory Medicine