CD34 and Merkel cell skin cancer: We present a retrospective descriptive study of 13 cases of MCC, received at the Department of Pathology over a 20-year period (2003–2023 inclusive) on which we performed a study using whole-slide (WSI) morphometric analysis scanning platform Aperio Scanscope CS for the detection and spatial distribution of mast cells, using monoclonal anti-tryptase antibody and anti-CD34 monoclonal antibody to study the density of microvessels.