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Updated: Jun 22, 2026

Implantation and Evaluation of Melanoma in the Murine Choroid via Optical Coherence Tomography
Published on: December 2, 2022
Malignant amelanotic melanoma developing from an intradermal naevus in a patient with oculocutaneous albinism
1Department of Dermatology, Tri-Service General Hospital, Taipei, Taiwan.
Abstract:
A 43-year-old Taiwanese man who had oculocutaneous albinism type 1 presented with a tumorous lesion over the pubic region. Within the tumour, there was a small pinkish plaque. Histopathologically, the tumour revealed benign naevus cells in the upper dermis and atypical malignant tumour cells in the deeper dermis. Immunohistochemistry using HMB-45 showed intensive positive staining in the deeper dermal tumour cells. Amelanotic malignant melanoma (MM) originating from a pre-existing intradermal naevus was diagnosed.
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