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Title

Vascular endothelial growth factor expression in hepatic epithelioid hemangioendothelioma: Implications for treatment and surgical management

Authors
Emamaullee, Juliet A.
Edgar, Ryan
Thiesen, Aducio
Bain, Vincent
Bigam, David
Kneteman, Norman
Shapiro, A M James
Published in Liver Transplantation. 2010, vol. 16, no. 2, p. 191-197
Abstract Epithelioid hemangioendothelioma (EHE) is a low-grade, malignant vascular tumor that most commonly presents within the liver. Patients with hepatic EHE are often candidates for liver transplantation as the disease is usually multifocal at diagnosis. Although these patients achieve excellent early outcomes post-transplant, there are very few data regarding tumor markers that can further direct chemotherapy in hepatic EHE to prevent recurrent disease. The purpose of this study was to analyze the expression of the angiogenic factor vascular endothelial growth factor (VEGF) and its receptors in hepatic EHE. Six patients with hepatic EHE were assessed for liver transplantation at our center. Pathology specimens of primary and recurrent EHE were analyzed by hematoxylin and eosin staining and by immunofluorescence for VEGF, fetal liver kinase 1 (Flk-1), and fms-related tyrosine kinase 1 (Flt-1) expression. Five patients underwent liver transplantation, and 1 patient underwent liver resection. Biopsy-proven recurrent EHE occurred in 3 patients. VEGF expression was present in 100% of the EHE specimens examined, whereas Flt-1 expression was present in only 1 sample, and Flk-1 was not observed in any of the specimens. In 1 patient with recurrent hepatic EHE post-liver transplantation, a progressive increase in the VEGF fluorescence intensity and distribution was observed. In conclusion, in this series, VEGF expression was observed in all hepatic EHE specimens analyzed. These data suggest that anti-VEGF chemotherapeutic agents will be of use in patients with hepatic EHE, particularly as a means of reducing the tumor volume prior to resection, as a means of treating unresectable or metastatic disease, or as an adjuvant therapy in the setting of liver transplantation.
Keywords AdolescentAdultAngiogenesis Inhibitors/therapeutic useBiopsyDisease-Free SurvivalFemaleHemangioendothelioma, Epithelioid/ metabolism/pathology/ surgeryHumansImmunohistochemistryLiver Neoplasms/ metabolism/pathology/ surgeryLiver TransplantationMaleMiddle AgedNeoplasm Recurrence, Local/metabolism/pathologyNeovascularization, Pathologic/drug therapy/metabolism/pathologyRetrospective StudiesTumor Markers, Biological/metabolismVascular Endothelial Growth Factor A/ metabolismVascular Endothelial Growth Factor Receptor-1/metabolismVascular Endothelial Growth Factor Receptor-2/metabolism
Identifiers
PMID: 20104492
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Research group Transplantation et hépatologie (905)
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EMAMAULLEE, Juliet A. et al. Vascular endothelial growth factor expression in hepatic epithelioid hemangioendothelioma: Implications for treatment and surgical management. In: Liver Transplantation, 2010, vol. 16, n° 2, p. 191-197. https://archive-ouverte.unige.ch/unige:20924

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Deposited on : 2012-05-23

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