Warty dyskeratoma is a rare, benign, epithelial tumour.

According to some authors, majority of these lesions display overall histopathologic features consistent with a follicular adnexal neoplasm. On the basis of this finding, the term follicular dyskeratoma has been suggested.

These are rare usually solitary lesions with an umbilicated center.

Age:  Usually occur in middle aged or elderly patients.

Site:   Located on the head and neck region.

Microscopic features:   Histology reveals cup shaped, well circumsribed lesion characterized by suprabasilar clefting , acantholysis, dyskeratosis and keratinous plug. Villi protrude into the lacuna.  Villi are dermal papillae lined by basal cells and contain inflammatory cells and dilated blood vessels.

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Note:   Acantholytic dyskeratosis is a histopathologic pattern defined by a hyperkeratotic and parakeratotic epidermis with intraepidermal clefts containing acantholytic and dyskeratotic keratinocytes. These features may be present in Warty dyskeratoma ; Darier disease ; Grover disease ; Hailey Hailey disease ; Acantholytic and dyskeratotic epidermal nevus, Focal acantholytic dyskeratosis ; Acantholytic solar keratosis ; Vulval and anal acantholytic dyskeratosis.