PDGFRB and skin neoplasm: To the best of our knowledge, PDGFR-β has not been studied in canine PNST, and therefore, the goal of this preliminary study was to evaluate the PDGFR-β expression in these skin tumors through an immunohistochemical (IHC) assay, aiming to pave the way to investigate new potential therapeutic targets for effective management of patients affected by these tumors.