Intraosseous mucoepidermoid carcinoma of the mandible.

Background: Mucoepidermoid carcinoma starts in the salivary glands and accounts for 5%-10% of all salivary gland tumours. Its intraosseous occurrence is rare and only accounts for 2%-3% of all mucoepidermoid carcinomas. This neoplasm often follows a long and indolent course.

Mammary analogue secretory carcinoma of the salivary glands.

Background: Mammary analogue secretory carcinoma (MASC) is a new disease among tumours affecting the salivary glands. It was first reported in 2010, and few cases have been reported worldwide. MASC is often incorrectly diagnosed as salivary gland acinic cell carcinoma.