A Case of Renal Cell Carcinoma Metastasizing to the Bilateral Parotid Glands

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  • 両側耳下腺腫瘤を契機に多発転移が明らかになった腎細胞癌例
  • 臨床 両側耳下腺腫瘤を契機に多発転移が明らかになった腎細胞癌例
  • リンショウ リョウソク ジカ センシュリュウ オ ケイキ ニ タハツ テンイ ガ アキラカ ニ ナッタ ジンサイボウガンレイ

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Abstract

Parotid gland metastasis from renal cell carcinoma is extremely rare and this case is, to our knowledge, the first presenting such bilateral parotid gland metastasis. A 70-year-old man who had undergone left radical nephrectomy one year before reported painless swelling in the bilateral parotid glands, found in computed tomography, magnetic resonance imaging, and 99mTc pertechnetate scintigraphy to be a vascular tumor of the superficial gland lobe. Superficial parotidectomy preserving the facial nerve were conducted bilaterally under general anesthesia. The histopathological diagnosis was metastatic renal cell carcinoma. Subsequent examination showed multiple metastases to the right kidney, lung, and pancreas, necessitating molecular target drug (Sunitinib) treatment.<br> Parotid gland metastasis is found as an initial symptom of renal cell carcinoma or may be found during renal cell carcinoma treatment. Renal cell carcinoma metastasis must thus be considered in the case of a parotid mass.<br>

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