ETV6 and acinar cell carcinoma: The 2017 World Health Organization (WHO) classification of head and neck tumors characterized the diverse group of salivary gland carcinomas by demographic, clinical, and histologic features.1 This 4th edition included mammary analog secretory carcinoma (MASC) as an entity distinct from acinic cell carcinoma.2 In the recently updated 5th edition of WHO classification of head and neck salivary gland tumors, secretory carcinomas harboring an ETV6-related mutation were grouped under the umbrella term secretory carcinoma (SC).3