爪甲下黒色腫 外傷後に生じた悪性黒色腫の1例

  • 森 弘樹
    東京医科歯科大学皮膚科形成外科診療班
  • 梅田 整
    東京医科歯科大学皮膚科形成外科診療班
  • 西岡 清
    東京医科歯科大学皮膚科学

書誌事項

タイトル別名
  • Melanoma under nail plate. A case of malignant melanoma after injuries.

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説明

This report deals with a case of malignant melanoma following injury in a 30-year-old female. She dropped a steel file on her rt. great toe to develop subungual hematoma at the age of 25. After nail avulsion, a granulomatous tumor was observed on the nail bed. Histpathologically, the tumor consisted of round or spindle shaped cells and had a little pigments. Immunohistochemically, the tumor was partially positive for S-100 protein and HMB-45, and was diagnosed acral lentiginous melanoma (ALM) . Amputation of rt. great toe followed by groin dissection were performed. Postoperative diagnosis was ALM Stage III (pT4 N0 M0).

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