Hyperkeratotic form of porokeratosis Mibelli.

A case with a hyperkeratotic form of porokeratosis Mibelli is reported. The clinical characteristics were a nonfamilial occurrence, hyperkeratotic verrucous plaques with an erythema and a segmental distribution. The histopathology showed cornoid lamellae and additional atypical findings. By electron microscopic study Civatte bodies and other degenerated epidermal cells were clarified.