title: Further observations on the biologic significance of vascular invasion in Hodgkin's disease.
mesh_terms: D001706:Biopsy; D001808:Blood Vessels / Q000473:pathology*; D006689:Hodgkin Disease / Q000145:classification / Q000401:mortality / Q000473:pathology*; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D008853:Microscopy; D013194:Staining and Labeling; D013997:Time Factors