A case of Warthin's tumor and pleomorphic adenoma arising in unilateral parotid gland

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  • ワルチン腫ようと多形腺腫の同側耳下腺内発生例

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Abstract

Synchronous unilateral tumors of the parotid gland are rarely found. Moreover, synchronous unilateral parotid gland tumors of different histologic types are extremely rare. In this paper, we present a case that Warthin's tumor and pleomorphic adenoma coexist in a unilateral parotid gland. A 65-year-old man with synchronous parotid tumors was treated at our hospital. The result of preoperative fine needle aspiration was pleomorphic adenoma. In the operation we identified facial nerves not from the main trunk, but from branches because we thought the tumor existed nearby main trunk of facial nerve and its volume was high. Pathological examination revealed that Warthin's tumor and pleomorphic adenoma were coexisting and not mixed. Both Warthin's tumor and pleomorphic adenoma are major tumors arising in the parotid gland, and the combination of Warthin's tumor and plermorphic adenoma occupy nearly 50% in the synchronous unilateral parotid gland tumors of different pathologic types, we could find only 20 other cases of synchronous Warthin's tumor and pleomorphic adenoma in the previous reports.

Journal

  • Stomato-pharyngology

    Stomato-pharyngology 16 (3), 365-370, 2004

    Japan Society of Stomato-pharyngology

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