Cutaneous horn malignant melanoma


https://doi.org/10.4081/dr.2013.e3
Vol. 5 No. 1 (2013)
Submitted: 3 August 2013
Accepted: 21 September 2013
Published: 4 December 2013
skin, cutaneous horn, malignant melanoma, verrucous malignant melanoma
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Authors

  • Haruto Nishida
    nharuto@oita-u.ac.jp
    Department of Diagnostic Pathology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Tsutomu Daa Department of Diagnostic Pathology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Kenji Kashima Department of Diagnostic Pathology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Motoki Arakane Department of Diagnostic Pathology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Hiromitsu Shimada Department of Dermatology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Mizuki Goto Department of Dermatology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Yoshitaka Kai Department of Dermatology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Yutaka Hatano Department of Dermatology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Osamu Okamoto Department of Dermatology, Faculty of Medicine, Oita University, Yufu, Japan.
  • Shigeo Yokoyama Department of Diagnostic Pathology, Faculty of Medicine, Oita University, Yufu, Japan.
A 73-year-old Japanese woman presented with cutaneous horn on the right cheek. The resected tumor was 9 mm in diameter, with 14 mm protrusion, and showed exophytic growth with marked papillomatosis. Histopathology showed proliferation of atypical melanocytes with melanin pigments in the epidermis and dermis under the cutaneous horn. These cells were confined to the base of the cutaneous horn, and did not spread to the surrounding epidermis. The final diagnosis was cutaneous horn malignant melanoma. This pathological entity is considered a specific form of verrucous melanoma, and might be added to the list of cutaneous horn-forming lesions.

Haruto Nishida, Department of Diagnostic Pathology, Faculty of Medicine, Oita University, Yufu


Supporting Agencies


Nishida, H., Daa, T., Kashima, K., Arakane, M., Shimada, H., Goto, M., Kai, Y., Hatano, Y., Okamoto, O., & Yokoyama, S. (2013). Cutaneous horn malignant melanoma. Dermatology Reports, 5(1), e3. https://doi.org/10.4081/dr.2013.e3

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