Mandibular central mucoepidermoid carcinoma with distant metastasis.

Mucoepidermoid carcinoma is the most common malignant salivary gland tumour. Central mucoepidermoid carcinomas (CMC) are an exceedingly rare subgroup, representing 2-4% of all cases. The authors report on a case of CMC in a patient who presented with trigeminal neuropathy, trismus and distant metastasis. The possible pathogenesis of CMC and criteria for diagnosis are discussed.