EZH2 and undifferentiated carcinoma: The 7 (of 37) thymic carcinomas with EZH2 staining in <80% of tumor cells included 2 (of 24, 8%) squamous cell carcinomas, 2 (of 2, 100%) mucoepidermoid carcinomas, 2 (of 2, 100%) adenocarcinomas, and 1 (of 3, 33%) undifferentiated carcinomas.