Cystadenoma of Minor Salivary Gland With Cervical Metastasis: Benign or Malignant?

A cystadenoma originating in the salivary gland is a rare neoplasm that can originate from the major or minor salivary glands. Although this tumor has the potential to recur if it is incompletely excised, it has been regarded as a benign tumor because it has not been determined to be associated with local tissue destruction or metastasis. This report serves as an update to the current understanding of cystadenoma. The patient in this case study presented with a recurrent painless mass in her left retromolar and submandibular regions that had persisted for more than 2 years. Histologic analysis showed that this lesion was a recurrent cystadenoma of the minor salivary gland, with cervical lymph nodes testing positive for tumor cells. After more than 3 years of clinical follow-up, no signs of recurrence were observed. A case of cystadenoma with cervical metastasis is presented; further attention should be paid to patients with recurrent cystadenoma that also might contain lymph node metastasis.