A benign tumor characterized histologically by tall columnar epithelium within a lymphoid tissue stroma. It is usually found in the salivary glands, especially the parotid.

(warthin tumor) A benign tumor that arises from the salivary gland and is characterized by the presence of an oncocytic, often papillary epithelial component, dense lymphoid stroma, and cystic spaces. It occurs primarily in the parotid gland and is the second most common benign parotid gland tumor (after pleomorphic adenoma). A strong association with smoking has been reported. It typically presents as a painless swelling in the lower portion of the parotid gland.

Warthin tumor is a benign tumor of the salivary gland. The first symptom is usually a painless, slow-growing bump in front of the ear, on the bottom of the mouth, or under the chin. Warthin tumors may increase in size over time, but few become cancerous. Though the cause is currently unknown, smoking is believed to increase the chance of...