Seborrheic Keratosis on the Umbilicus : Case Report and Review of Japanese Literature

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  • SAWADA Yu
    Department of Dermatology, School of Medicine, University of Occupational and Environmental Health
  • YOSHIKI Ryutaro
    Department of Dermatology, School of Medicine, University of Occupational and Environmental Health
  • KAWAKAMI Chika
    Department of Dermatology, School of Medicine, University of Occupational and Environmental Health
  • NAKAMURA Motonobu
    Department of Dermatology, School of Medicine, University of Occupational and Environmental Health
  • TOKURA Yoshiki
    Department of Dermatology, School of Medicine, University of Occupational and Environmental Health

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Other Title
  • 臍部に生じた脂漏性角化症の一例
  • サイブ ニ ショウジタ シロウセイ カッカショウ ノ イチレイ

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Abstract

A 78-year-old man was seen for a tumor on his umbilicus. Clinically, there was a dark brown nodule with thick scales. The excised tumor showed the acanthotic type of seborrheic keratosis. Six cases of seborrheic keratosis arising on the umbilicus have been reported. All of them were of the histologically hyperkeratotic type. Our case is the first report of an acanthotic type of seborrheic keratosis on the umbilicus. Seborrheic keratosis is one of the common skin tumors, but we hesitated in this diagnosis because of its abnormal location.

Journal

  • Journal of UOEH

    Journal of UOEH 31 (1), 51-55, 2009

    The University of Occupational and Environmental Health, Japan

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