In the present study, we summarize our experience with a case of salivary duct carcinoma occurring in the orifice of the parotid gland that was suggested to originate in Stensen’s duct. The patient was a 78-year-old man who consulted our hospital because of a mass in the left buccal mucosa. Although a biopsy strongly indicated salivary duct carcinoma, no cervical lymph node metastasis or distant metastasis was evident; therefore only local resection was performed. The tumor was located near the orifice of the parotid gland. Because the histopathological examination showed that the ductal epithelium was continuous around the tumor, the tumor was considered to be a salivary duct carcinoma that had developed in Stensen’s duct at the orifice of the parotid gland. After postoperative radiation, there has been no evidence of recurrence or metastasis for 3 years.
