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Image Number 915 (Epidermal nevus)

 
Morphology:
Plaque

Diagnosis: Epidermal nevus

Site: Abdomen

Sex: F

Age: 33

Type: Clinical

Description: well-demarcated, brown, papillomatous plaques

Submitted by: Ebtisam Elghblawi

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Differential Diagnosis

History: Epidermal nevi are congenital hamartomas of embryonal ectodermal origin classified on the basis of their main component; the component may be sebaceous, apocrine, eccrine, follicular, or keratinocytic. Verrucous epidermal nevus is well-demarcated, skin coloured to brown, papillomatous plaques. Most lesions are present at birth or develop during early infancy; they enlarge slowly during childhood and generally reaching a stable size at adolescence. Lesions may be localized or diffuse. Linear configurations are common, especially on the limbs, and may follow skin tension lines, or Blaschko's lines.

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