DefinitionThis section has been translated automatically.
The common epidermal naevus of the hard type is linear or arranged in a swirly pattern and characterized by a hard, warty, dirty-brown surface.
The common epidermal naevus of the soft type is also linear or arranged in a swirly pattern and is characterized by a soft, velvety, dirty-brown surface.
Occurrence/EpidemiologyThis section has been translated automatically.
Incidence is estimated at 1:1000 births.
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ManifestationThis section has been translated automatically.
Congenital or occurring in early childhood. 80% of nevi are diagnosable in the first year of life.
LocalizationThis section has been translated automatically.
Face, neck, torso, extremities.
Clinical featuresThis section has been translated automatically.
Bizarrely configured, often following a swirling line pattern (fountain pattern), linear or planar, often yellow or yellow-brown in infancy or toddlers, later brown or brown-black papules and/or plaques with a warty surface.
In the case of a flat cutaneous mosaic pattern, usually abrupt limitation to the midline (naevus verrucosus unius lateralis).
A bilateral, generalized distribution pattern is rarer (see fig.).
HistologyThis section has been translated automatically.
Differential diagnosisThis section has been translated automatically.
TherapyThis section has been translated automatically.
Progression/forecastThis section has been translated automatically.
The skin changes are usually only discreetly visible at the initial manifestation, inconspicuous, flat, surface-smooth. In the course of the years, continuously increasing, verrucous aspect.
Surprisingly, at times almost complete regression of an extensive verrucous nevus, with recurrence in the same location after several months, has been observed (see Fig.).
Note(s)This section has been translated automatically.
A special form of an epidermal hamartoma of the hard type (= naevus verrucosus) is the so-called "epidermolytic epidermal naevus". Its histological peculiarity is granular degeneration or acanthokeratolysis. Another special form is the so-called "inflammatory epidermal nevus", also known by the acronym ILVEN.
Hamartomas of the skin are described as so-called "organoid epidermal nevi" in which the epidermis and/or skin appendages are altered (e.g. nevus sebaceus).
LiteratureThis section has been translated automatically.
- Kim R et al (2013) Verrucous epidermal nevus. Dermatol Online J 19: 20707
- Lapidoth M et al (2013) Treatment of verrucous epidermal nevus: experience with 71 cases. Dermatology 226:342-346
- Miranda LQ et al (2013) Analysis of mutations in the PIK3CA and FGFR3 genes in verrucous epidermal nevus. On Bras Dermatol 88(6 Suppl 1):36-38
- Rogers M et al (1989) Epidermal nevi and the epidermal nevus syndrome.
A review of 131 cases. J Am Acad Dermatol 20:476-88.
Incoming links (12)Angora hair nevus syndrome; Aplasia cutis congenita (overview); Degeneration, granular; Epidermal nevus; Hyperkeratotic nevus; Lateral nevus verrucosus unius lateralis; Naevus epidermal hard; Naevus, hard; Nevus durus; Nevus, hyperkeratotic; ... Show all
Outgoing links (14)Acanthosis; Blaschko lines; Degeneration, granular; Dermabrasion; Epidermal nevus (overview); Epigenetics; Excision; Ilven; Keratosis seborrhoeic (overview); Mosaic cutaneous; ... Show all
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