Máculas pigmentadas de distribución segmentaria

Canedo, I. Fernández; Rodrigo, Isabel

doi:10.1016/s0213-9251(05)72220-6

Cited by 1 publication

(2 citation statements)

References 10 publications

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“…MM have been reported to occur on all types of segmentally arranged melanocytic naevi, other than SN and SCMN . While this occurrence is not unexpected for mosaic DNS, there is not enough evidence to believe that the involved cutaneous segments carry a significantly increased risk of malignant degeneration.…”

Section: Discussionmentioning

confidence: 99%

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Melanocytic naevi clustered on normal background skin

Torchia

2015

Clin Exp Dermatol

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Several types of maculopapular melanocytic naevi can occur in a multiple form, and be arranged in a nonrandom fashion on the skin. The most frequently reported segmentally grouped naevi are lentigines. Two types of segmentally arranged lentigines probably exist. The first is associated with neurofibromatosis (NF)1 or NF1 signs, features scattered light-brown lesions and can be considered a type of mosaic NF1. By contrast, non-NF1 associated lesions are characterized by densely packed, dark lesions, and can be defined as 'non-NF1 checkerboard-arranged lentigines'. Blue naevi, Spitz naevi and common acquired melanocytic naevi can occur, clustered in an agminated (or cannonball) shape. However, if large enough, they always follow a checkerboard pattern. Hence, such mosaic conditions should be termed 'checkerboard-arranged blue naevi', 'checkerboard-arranged Spitz naevi' and 'checkerboard-arranged common acquired melanocytic naevi'. Segmentally arranged dysplastic melanocytic naevi probably represent a mosaic form of dysplastic naevus syndrome. Dysplastic melanocytic naevi confined to a cutaneous segment could be defined as 'isolated segmental dysplastic naevus syndrome', while segmentally arranged dysplastic melanocytic naevi co-occurring with widespread, nonsegmental dysplastic melanocytic naevi might configure a 'superimposed segmental dysplastic naevus syndrome'. Small congenital melanocytic naevi are always grouped along Blaschko lines. The only other instances following Blaschko lines are the so-called 'linear lentiginous naevus' and a unique case of multiple deep penetrating naevi.

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Section: Discussionmentioning

confidence: 99%

“…Interestingly, the same dichotomy can be observed in the much rarer instance of lentigines arranged along Blaschko lines. In fact, dark‐brown, densely packed lentigines have been named ‘linear lentiginous naevus,’ whereas when the lesions are light‐brown and scattered, the involved segments contain café‐au‐lait spots …”

Section: Lentiginesmentioning

confidence: 99%

Melanocytic naevi clustered on normal background skin

Torchia

2015

Clin Exp Dermatol

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Máculas pigmentadas de distribución segmentaria

Cited by 1 publication

References 10 publications

Melanocytic naevi clustered on normal background skin

Melanocytic naevi clustered on normal background skin

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