A case of malignant melanoma of the big toe with unclear margins

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  • TAKIGUCHI Tetsuya
    Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine
  • SENOO Ayumi
    Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine
  • OTA Yusuke
    Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine
  • MIZUKAMI Takahide
    Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine
  • NAGATA Takeshi
    Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine
  • FUJIWARA Masao
    Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine
  • FUKAMIZU Hidekazu
    Department of Plastic and Reconstructive Surgery, Hamamatsu University School of Medicine

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Other Title
  • 切除範囲の決定に苦慮した母趾悪性黒色腫の1例

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<p>A 74-year-old woman presented with a grey lesion on her right big toe. She underwent an excisional biopsy of the lesion at another hospital. Histologically, it was diagnosed as a malignant melanoma ; the tumor thickness was 1.9 mm. The lesion was resected with 2-cm margins, which resulted in MP joint amputation. However, pathology revealed positive surgical margins. Punch biopsies were performed at sites 1 to 2 cm from the prior positive margins to confirm the border of the tumor. The results showed no residual melanoma cells. Therefore, an additional surgical resection was performed with 1-cm margins. However, the pathology revealed positive surgical margins again. The patient underwent an initial surgical excision, followed by 3 subsequent excisions until a pathologically negative margin was obtained. It was difficult to confirm the border of the tumor because of the absence of melanin pigmentation.[Skin Cancer (Japan) 2016 ; 32 : 139-143]</p>

Journal

  • Skin Cancer

    Skin Cancer 31 (2), 139-143, 2016

    The Japanese Skin Cancer Society

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