A Case of Heavy-metal Tungsten Alloy Granuloma Outside of the Nostril

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  • 鼻翼外側に生じたタングステン合金異物肉芽腫例
  • 臨床 鼻翼外側に生じたタングステン合金異物肉芽腫例
  • リンショウ ビヨク ソトガワ ニ ショウジタ タングステン ゴウキン イブツ ニクゲシュレイ

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We report a case of foreign body granuloma caused by heavy-metal tungsten alloy outside of the nostril. A 72-year-old woman seen for subcutaneous nostril swelling had the granuloma completely resected. Histopathologically, the granuloma was caused by heavy-metal tungsten alloy that coagulatively necrosed fibrous skeletal muscular and fibrovascular tissue. The rim of the granuloma consisted of spindle cells and epithelioid cells surrounded by small lymphocytes. No foreign-body reaction was seen. The woman had no memory of when and why the foreign substance was injected or implanted.<br> To date, ten cases of foreign body granuloma involving heavy-metal tungsten alloy, including this case, have been reported in Japan. Clinical manifestations, histopathological findings, and treatment of this lesion are discussed.<br>

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