1. VEGF-C, VEGF-D and VEGFR-3 expression in peripheral neuroblastic tumours
- Author
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Rachel L Nash, Ameesh Patel, Chris A Rogers, Lucy Radevsky, Michael Luckett, and Pramila Ramani
- Subjects
medicine.medical_specialty ,Pathology ,Histology ,Lymphovascular invasion ,food and beverages ,General Medicine ,Biology ,medicine.disease ,FLT4 ,Lymphovascular ,Pathology and Forensic Medicine ,Lymphangiogenesis ,Vascular endothelial growth factor ,chemistry.chemical_compound ,chemistry ,Neuroblastoma ,embryonic structures ,medicine ,Immunohistochemistry ,Histopathology - Abstract
Ramani P, Nash R, Radevsky L, Patel A, Luckett M & Rogers C (2012) Histopathology VEGF-C, VEGF-D and VEGFR-3 expression in peripheral neuroblastic tumours Aims: More than 50% of neuroblastomas (NBs) present with haematogenous and/or lymphatic metastasis; however, little is known about the clinicopathological significance in NBs of the key lymphangiogenesis growth factors vascular endothelial growth factor (VEGF)-C and VEGF-D and the receptor VEGFR-3. Methods and results: Ninety-three NBs and nine ganglioneuromas (GNs) were immunostained for VEGF-C, VEGF-D and VEGFR-3. VEGF-C and VEGF-D were present in 76% and 82% of the NBs, respectively. There was no significant difference in VEGF-C expression between NBs and GNs. VEGF-D expression was significantly higher in NBs compared with GNs and in MYCN-amplified NBs. VEGFR-3 tumoral cell expression (VEGFR-3c), present in 48% of the NBs, was significantly higher in NBs from children ≥18 months at presentation and those belonging to a high-risk group. VEGFR-3 lymphovascular density was increased significantly in NBs compared with GNs and in NBs associated with adverse clinicopathological and biological factors. Lymphovascular invasion, assessed in VEGFR-3-stained vessels, was present in ∼50% of NBs. Cox regression analyses demonstrated that VEGFR-3c expression was associated with a significantly shorter event-free survival and that its effect was independent of the important pathological variable, mitosis–karyorrhexis index. Conclusions: VEGF-D and VEGFR-3 up-regulation support tumour progression in NB and VEGFR-3c may provide a useful prognostic marker in NBs.
- Published
- 2012