acanthomas

Definition: Acanthomas are benign tumors of epidermal keratinocytes

The proliferating cells may show normal epidermoid keratinization or a wide range of aberrant keratinization, including epidermolytic hyperkeratosis (epidermolytic acanthoma), dyskeratosis with acantholysis (warty dyskeratoma), or acantholysis alone (acantholytic acanthoma).

Keratoacanthomas are not usually considered in this category, although there is no logical reason for their exclusion.

Images

 Solitary Vulval nodule: epidermolytic acanthoma

• https://twitter.com/kashingshum/status/817305503596351489

Types

 clear cell acanthoma
 epidermolytic acanthoma / acantholytic dyskeratotic acanthoma
 warty dyskeratoma
 acantholytic acanthoma
 seborrheic keratosis
 dermatosis papulosa nigra
 melanoacanthoma
 clear cell papulosis
 large cell acanthoma

See also

 epidermal tumors
 epidermal lesions
 epidermal anomalies