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Title

Lymphatic vessel density and vascular endothelial growth factor-C expression correlate with malignant behavior in human pancreatic endocrine tumors

Authors
Terris, Benoit
Dousset, Bertrand
Published in Clinical Cancer Research. 2004, vol. 10, no. 20, p. 6919-28
Abstract Metastatic dissemination of tumor cells to regional lymph nodes is a common early feature of many human cancers including pancreatic adenocarcinoma. In contrast, lymph node metastasis is more variably observed in pancreatic endocrine tumors. The objective of this study was to assess the lymphatic system of human pancreatic endocrine tumors and correlate this to clinical behavior. Immunohistochemistry was performed using antibodies to two recently identified markers of lymphatic endothelium, namely, LYVE-1 and podoplanin, and to the lymphangiogenic factor vascular endothelial growth factor (VEGF)-C. As has been reported previously, we observed that in the normal pancreas, islets of Langerhans are devoid of intra-islet lymphatics, but that lymphatics are present in connective tissue in association with ducts and blood vessels. We found that both benign and malignant pancreatic endocrine tumors contain intratumoral lymphatic vessels. Lymphatic vessel density was related to the size of the tumor in benign tumors and to the presence of liver metastasis but not to lymph node metastasis in malignant tumors. VEGF-C was expressed in tumor cells: 4 of 19 (21%) benign tumors were positive, whereas 6 of 9 (67%) borderline tumors and 9 of 11 (82%) carcinomas were positive. These findings strongly suggest that lymphangiogenesis occurs in pancreatic endocrine tumors and that lymphatic invasion and the development of metastases are associated with VEGF-C expression.
Keywords AdolescentAdultAgedAged, 80 and overFemaleHumansLiver Neoplasms/secondaryLymphatic MetastasisLymphatic VesselsMaleMiddle AgedNeoplasm InvasivenessPancreatic Diseases/pathologyPancreatic Neoplasms/pathologyPancrelipase/physiologyVascular Endothelial Growth Factor C/biosynthesis
Identifiers
PMID: 15501970
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Structures
Research groups Métastases du foie (657)
Chirurgie viscérale (104)
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(ISO format)
RUBBIA-BRANDT, Laura et al. Lymphatic vessel density and vascular endothelial growth factor-C expression correlate with malignant behavior in human pancreatic endocrine tumors. In: Clinical Cancer Research, 2004, vol. 10, n° 20, p. 6919-28. https://archive-ouverte.unige.ch/unige:42138

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Deposited on : 2014-11-24

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