Of malignant tumors with a propensity to invade the perineural space, adenoid cystic carcinoma of the salivary glands is perhaps a well-known entity. Adenoid cystic carcinoma (ACC) is a rare, slow growing malignant salivary gland tumor that is characterized by indolent, locally invasive growth with high propensity for local recurrence and distant metastasis. Upto 50% of these tumors occur in the intraoral minor salivary glands usually in the hard palate. Buccal mucosal tumors are relatively rare. The purpose of this article is to discuss an unusual case of adenoid cystic carcinoma of the buccal mucosa and review the pertinent literature
