Arch Craniofac Surg.  2019 Aug;20(4):260-264. 10.7181/acfs.2019.00283.

A case of malignant melanoma after repeated recurrent dysplastic nevi

• Jeong DK
• Bae YC
• Lee SJ
• Kim HS
• Choi YJ

• KMID: 2456819
• DOI: http://doi.org/10.7181/acfs.2019.00283

Abstract

Dysplastic nevus is common and affects about 10% of the northern European-descendent population. Studies over the past several decades have identified dysplastic nevi as a risk factor for malignant melanoma. Furthermore, in rare cases, they confirmed that dysplastic nevi have progressed to melanoma. Cases in which dysplastic nevi progressed to malignant melanoma in multiple studies are not uncommon. A 35-year-old woman presented with the major symptom of multiple itchy brown nodules (2.0 cm× 1.3 cm) in the left cheek that had first appeared 20 years earlier. Complete excision was performed at the first visit; subsequent biopsy confirmed that they were dysplastic nevi. They recurred three times over 3 years at the same site, all of which were histologically diagnosed as dysplastic nevi. Five years after the final excision, a brownish nodule developed in the left cheek, with others at the left temporal region, right retroauricular region, and left shoulder at the same time. These lesions were histologically diagnosed as malignant melanoma. We experienced a case of malignant melanoma that occurred at the same site after three recurrences of dysplastic nevi. Although rare, the possibility of malignant melanoma should be considered in follow-ups in cases involving repeatedly recurrent dysplastic nevi.

Keyword

Dysplastic nevus syndrome; Melanoma; Recurrence

MeSH Terms

Adult
Biopsy
Cheek
Dysplastic Nevus Syndrome*
Female
Follow-Up Studies
Humans
Melanoma*
Recurrence
Risk Factors
Shoulder
Temporal Lobe