Podoplanin lymphatic density and invasion correlate with adverse clinicopathologic and biological factors and survival in neuroblastomas

The American Journal of Surgical Pathology
Pramila RamaniMargaret T May

Abstract

Neuroblastoma (NB) is a challenging problem in oncology, as the majority of patients have lymphatic and/or hematogenous metastases at diagnosis. We investigated the prognostic significance of lymphatic density (LD) and invasion (LI) in NBs using the lymphatic endothelial marker podoplanin (PDPN). A total of 77 neuroblastic tumors and 9 ganglioneuromas (GNs) were immunostained for PDPN using D2-40 antibody. Intratumoral lymphatics were identified in 87% (67/77) of NBs and 7/9 GNs. The LD counts were significantly higher (P<0.01) in NBs (median=19.6, range=0.00 to 89.3) than in GNs (median=10.2, range=0 to 18.7). LI, assessed in D2-40-stained lymphatics, was present in 52/67 (78%) NBs. LDs were significantly higher in NBs from patients with adverse clinical factors (advanced-stage, high-risk group, primary abdominal compared with extra-abdominal sites), biological factors (MYCN amplification, 1p deletion, 17q gain), and distant lymph node metastases. LDs and LI were also significantly higher in NBs belonging to an unfavorable pathology prognostic group and in those with a high mitosis-karyorrhexis index. High LD and the presence of LI correlated with a shorter event-free survival in univariable analyses. High LD and the presence ...Continue Reading

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Citations

Dec 27, 2015·Advanced Drug Delivery Reviews·Lothar C Dieterich, Michael Detmar
Jun 15, 2018·Oncotarget·Irene TadeoRosa Noguera
Jul 19, 2012·Histopathology·Pramila RamaniChris Rogers

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