PDPN and primary cutaneous T-cell non-Hodgkin lymphoma: Accordingly, biopsies from the lesional skin of CTCL patients exhibit a stage-dependent increase in microvessel density and the lymphatic marker podoplanin (Vacca et al., 1997; Mazur et al., 2004; Kawaguchi et al., 2014; Jankowska-Konsur et al., 2016, 2017).