histologically and -- in one case -- electronmicroscopically the most striking features are : the paucity of the merkel 's cells in the overlying basal layer of the epidermis , the hyperplasia of the capillary blood vessels and of their endothelial cells , the presence of thick myelinated nerve fibers in the depth of the lesion but not in the vicinity of the epidermis , the proliferation of a loose dermal connective tissue , the occurrence of sparse hair follicles connected to the trichodiscoma but frequently located on its margin .
C0205832
merkel 's cells
C0014520
epidermis