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Warthin Tumor

  • Warthin Tumors are thought to be caused by salivary gland tissue trapped within a lymph node during embryogenesis. These tumors exclusively occur in the parotid gland and are always benign. Curiously, there is an increased risk of developing these neoplasms in smokers.
  • On gross inspection, warthin tumors manifest as palpable, well-encapsulated masses that can grow up to a few centimeters in diameter. Histologically, these neoplasms display characteristic, cystic spaces lined by a double-layered epithelium of neoplastic cells covering dense lymphoid stroma.