Mucoepidermoid carcinoma of unknown primary in the head and neck: a case report and review of the literature

OBJECTIVE: Mucoepidermoid carcinoma of unknown primary (MEC-UP) in the head and neck is a rare presentation of the most common salivary gland cancer. Cancers of unknown primary sites often have poorer prognoses than similar cancers with known primary. Few cases of MEC-UP have been reported; therefore, the objective of this report is an overview of the diagnosis and management of MEC-UP. METHODS: We present two patients with low-grade MEC-UP at …