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lüll The role of tumor lymphangiogenesis in metastatic spread Stacker SA; Baldwin ME; Achen MGFASEB J 2002[Jul]; 16 (9): 922-34The high mortality rates associated with cancer can be attributed to the metastatic spread of tumor cells from the site of their origin. Tumor cells invade either the blood or lymphatic vessels to access the general circulation and then establish themselves in other tissues. Clinicopathological data suggest that the lymphatics are an initial route for the spread of solid tumors. Detection of sentinel lymph nodes by biopsy provides significant information for staging and designing therapeutic regimens. The role of angiogenesis in facilitating the growth of solid tumors has been well established, but the presence of lymphatic vessels and the relevance of lymphangiogenesis to tumor spread are less clear. Recently, the molecular pathway that signals for lymphangiogenesis and relatively specific markers for lymphatic endothelium have been described allowing analyses of tumor lymphangiogenesis to be performed in animal models. These studies demonstrate that tumor lymphangiogenesis is a major component of the metastatic process and implicate members of the VEGF family of growth factors as key mediators of lymphangiogenesis in both normal biology and tumors.|*Lymphatic Metastasis[MESH]|Animals[MESH]|Biomarkers/analysis[MESH]|Endothelial Growth Factors/physiology[MESH]|Endothelium/chemistry[MESH]|Humans[MESH]|Lymphatic System/anatomy & histology/growth & development/physiology[MESH]|Lymphokines/physiology[MESH]|Models, Biological[MESH]|Neoplasms/etiology/*pathology/therapy[MESH]|Neovascularization, Pathologic[MESH]|Vascular Endothelial Growth Factor A[MESH]|Vascular Endothelial Growth Factors[MESH] |