Pictures Flashcards
interconnected, branching strands of basaloid cells embedded by a loose, richly vascularised fibrous stroma, extending from the epidermis down into the dermis
Papillary mesenchymal bodies = hair follicle tumour
Dilated pore of winer
Clear cell acanthoma
- Discrete acanthoma with overlying parakeratosis
- Distinct transition between the normal epidermis and the clearer/paler cells in the stratum
spinosum - Peppered with neutrophils
The cells of the acanthoma are deficient in
phosphorylase, resulting in an accumulation of glycogen.
Large cell acanthoma
The cells composing the acanthoma have large nuclei, typically twice the size of the nuclei in the surrounding epidermis.
May be pigmented
Acantholytic acanthoma
Pilar cyst
Abrupt keratinization without a granular layer
* Deeply eosinophilic dense keratin
* Focal calcification of contents common
* Typically on scalp
* Often multiple
Blue naevus