Age dependency of primary tumor sites and metastases in patients with Ewing sarcoma.

Abstract:

BACKGROUND:The median age of patients with Ewing sarcoma (EwS) at diagnosis is around 14-15 years. Older age is associated with a worse outcome. The correlation of age at diagnosis on sites of disease has not been fully described. OBJECTIVE:The goal of this study was to evaluate the differences in sites of primary tumor and metastatic tumor involvement according to age groups. DESIGN/METHOD:EwS data from the Gesellschaft für Pädiatrische Onkologie und Hämatology (GPOH) database of the Cooperative Ewing Sarcoma Study (CESS) 81/86 and the European Intergroup Cooperative Ewing's Sarcoma Study EICESS 92 and the EUROpean Ewing tumor Working Initiative of National Groups-99-Protocol (EURO-E.W.I.N.G.-99) study were analyzed. Patient and tumor characteristics were evaluated statistically using chi square tests. RESULTS:The study population included 2,635 patients with bone EwS. Sites of primary and metastatic tumors differed according to the age groups of young children (0-9 years), early adolescence (10-14 years), late adolescence (15-19 years), young adults (20-24 years), and adults (more than 24 years). Young children demonstrated the most striking differences in site of disease with a lower proportion of pelvic primary and axial tumors. They presented less often with metastatic disease at diagnosis. CONCLUSIONS:Site of primary and metastatic tumor involvement in EwS differs according to patient age. The biological and developmental etiology for these differences requires further investigations.

journal_name

Pediatr Blood Cancer

journal_title

Pediatric blood & cancer

authors

Worch J,Ranft A,DuBois SG,Paulussen M,Juergens H,Dirksen U

doi

10.1002/pbc.27251

subject

Has Abstract

pub_date

2018-09-01 00:00:00

pages

e27251

issue

9

eissn

1545-5009

issn

1545-5017

journal_volume

65

pub_type

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