Melanocytosis dermal (overview) D22.-

Benign, congenital or in the first months of life manifesting, rarely later acquired, blue to blue-grey patches or spots, which are histologically characterized by a proliferation of dermal, pigmented, spindle and/or dendritic cells.

The following subdivision can be made according to their distribution pattern:

• Mongolian stain
• Nevus fuscocoeruleus ophthalmomaxillaris (Naevus Ota)
• Naevus fuscocoeruleus deltoideoacromialis (Naevus Ito).

Combination with other malformations (see below the respective clinical pictures).

There is a tendency to regression during childhood.

1. Baroody M, Holds JB (2004) Extensive locoregional malignant melanoma transformation in a patient with oculodermal melanocytosis. Plast Reconstr Surgery 113: 317-322
2. Goncharuk V et al (2003) Bednar tumor associated with dermal melanocytosis: melanocytic colonization or neuroectodermal multidirectional differentiation? J Cutan Pathol 30: 147-151
3. Hanson M et al (2003) Association of dermal melanocytosis with lysosomal storage disease: clinical features and hypotheses regarding pathogenesis. Arch Dermatol 139: 916-920
4. Ruby AI et al (2001) Acquired dermal melanocytosis: appearance during pregnancy. J Am Acad Dermatol 45: 609-613