Cutaneous horn malignant melanoma

• DOI: 10.4081/dr.2013.e3
• Publication Date: 2013-12-04T08:43:15Z
• Authors: Haruto Nishida; Tsutomu Daa; Kenji Kashima; Motoki Arakane; Hiromitsu Shimada; Mizuki Goto; Yoshitaka Kai; Yutaka Hatano; Osamu Okamoto; Shigeo Yokoyama
• Keywords: Epidermis (zoology); Histopathology; Superficial spreading melanoma; Nodular melanoma

A 73-year-old Japanese woman presented with cutaneous horn on the right cheek. The resected tumor was 9 mm in diameter, 14 protrusion, and showed exophytic growth marked papillomatosis. Histopathology proliferation of atypical melanocytes melanin pigments epidermis dermis under horn. These cells were confined to base horn, did not spread surrounding epidermis. final diagnosis malignant melanoma. This pathological entity is considered a specific form verrucous melanoma, might be added list horn-forming lesions.