Pnmary salivary gland tumors of the lung are uncommon, Primary acinic cell carcinoma of the lung is one of the rarest of this family of tumors. Its existence as a primary lung turner has been well documented in the literature. Histologically, these tumors recapitulare the spectrum of growth patterns and histologic types seen in salivary glands, a site where they occur with greater frequency. Because of their rarity; and ability to mimic more common primary lung tumors, it is important to carefully evaluate chest neoplasms using histochemical, immunohistochemical, and ultrastructural studies. Acinic cell carcinoma of the lung should be included in the differential diagnosis of rumors that display the so-called salivary gland-type morphology, as well as those that show a neuroendocrine morphology.