Salivary gland tumors of the maxilla are rare. A case of adenocarcinoma, NOS in the maxilla is reported in this paper. A 67-year-old woman had been aware of a mass in the hard palate and tenderness at the base of ala nasi for a few months. The lesion was clinically suspected to be a benign maxillary tumor and was excised under general anesthesia. The mass was pathologically diagnosed as adenocarcinoma, NOS. It was suggested that adenocarcinoma, NOS arose from the minor salivary gland and was entrapped in the maxilla.
