ETV6 and mucoepidermoid carcinoma: Prior to IHC and ETV6 gene detection in the current study, four of the 23 patients’ tumors were misdiagnosed as acinar cell carcinomas, three as mucoepidermoid carcinomas, two as adenoid cystic carcinomas, one as low-grade ductal carcinoma, and one as squamous cell carcinoma.