Abstract:
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.
journal_name
Histopathologyjournal_title
Histopathologyauthors
Ramani P,Nash R,Radevsky L,Patel A,Luckett M,Rogers Cdoi
10.1111/j.1365-2559.2012.04307.xsubject
Has Abstractpub_date
2012-12-01 00:00:00pages
1006-16issue
6eissn
0309-0167issn
1365-2559journal_volume
61pub_type
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