[Oral retention and extravasation mucoceles of the minor salivary glands - more common than you might think!].

Oral mucoceles are cystic changes in the minor salivary glands caused by traumatic damage to the salivary gland ducts or their obstruction with subsequent salivary congestion. In extravasation mucocele, saliva leaks from the ruptured duct into the surrounding tissue and causes a local inflammatory reaction. Thus, histopathologically, granulation tissue is seen around the salivary fluid, but no epithelial lining.