Author: Assoc Prof Patrick Emanuel, Dermatopathologist, Auckland, New Zealand, 2013.
What is keratoelastoidosis marginalis?
Keratoelastoidosis marginalis presents as symmetric, hyperkeratotic, linearplaques along the lateral aspects of the hands. It has otherwise been reported as digital papular calcific elastosis of the hands, and degenerativecollagenous plaques of the hands.
Histology of keratoelastoidosis marginalis
Histologic findings in keratoelastoidosis marginalis include epidermalacanthosis with some loss of the rete pattern associated with overlying hyperkeratosis (figure 1). There are thick acellular collagen bundles in the dermis (figure 2). In addition, there are fragmented degenerative elastic which may form elastotic masses. These masses sometimes calcify (figure 3).