Salivary Gland Inverted Ductal Papilloma

**Semantic type:** Neoplastic Process

**Definition:** A very rare benign tumor of the minor salivary glands, characterized by a luminal papillary proliferation that arises at the junction of the salivary gland duct and the oral mucosal surface epithelium and expands as a nodular mass into the lamina propria. It presents as an asymptomatic mucosal swelling.