Prognostic factors and occult nodal disease in mucoepidermoid carcinoma of the oral cavity and oropharynx: An analysis of the National Cancer Database

Salivary gland malignancies are rare and account for only 3% of head and neck cancers [1]. Despite their rarity, these neoplasms are heterogeneous and are classified into 24 different histologic subtypes by the World Health Organization [2]. Mucoepidermoid carcinoma (MEC) is the most common salivary gland malignancy and is most often located in the parotid gland followed by the minor salivary glands throughout the upper aero-digestive tract, most notably in the oral cavity (OC) and oropharynx (OP) [3,4].

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