A benign salivary gland tumor of minor salivary gland mimicking an epithelial malignancy

Abstract

Pleomorphic adenoma (PA) is the most common benign tumor of major or minor salivary glands. Microscopically, PA exhibits a great diversity of morphological aspects. Here, we present an unusual case of PA with extensive squamous metaplasia and keratin-filled cysts in the left retromolar region of a 50-year-old edentulous person whose microscopic finding may represent a diagnostic dilemma for pathologists.

Keywords

• Keratin-filled cysts
• pleomorphic adenoma
• squamous metaplasia