PDPN and neoplasm: The presence of the lymphatic vessels in lymphoid and polymorphic cell infiltrates correlated with stage (gamma = 0.517; p=0.0005), histology (gamma = 0.538; p=0.0005), the depth of tumor invasion (gamma = 0.708; p < 0.00001), the phenomenon of fragmentation in the tumor solid component (gamma = 0.811; p=0.000001), and the presence of tumor emboli in the podoplanin-positive vessels (gamma = 0.762; p=0.0001).