epidermal hyperplastic lesions

Types

 focal epidermal hyperplasia : epidermal hyperplastic lesions

• focal epidermal hyperplasia without cytonuclear atypias
  • pseudoepitheliomatous hyperplasia (PEH)

• focal epidermal hyperplasia with cytonuclear atypias
  • epidermal cellular dysplasia
    • pre-epitheliomatous keratosis

• • squamous cell carcinoma

 diffuse epidermal hyperplasia

• acanthosis