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The epidemiology of bone cancer in 0 - 39 year olds in northern England, 1981 - 2002
© Eyre et al; licensee BioMed Central Ltd. 2010
Received: 19 November 2009
Accepted: 6 July 2010
Published: 6 July 2010
There is a paucity of recent epidemiological data on bone cancers. The aim of this study was to describe incidence and survival patterns for bone cancers diagnosed during 1981 - 2002.
Cases aged 0 - 39 years (236 osteosarcomas, 166 Ewing sarcomas and 73 chondrosarcomas) were analysed using Poisson and Cox regressions.
Incidence rates (per million persons per year) for osteosarcoma were 2.5 at age 0 - 14 years; 4.5 at age 15 - 29 years and 1.0 at age 30 - 39 years. Similarly, for Ewing sarcoma the incidence rates were 2.2; 2.9; 0.4 and for chondrosarcoma rates were 0.1; 1.2; 1.8 respectively. Incidence of osteosarcoma increased at an average annual rate of 2.5% (95% CI 0.4 - 4.7; P = 0.02), but there was no change in incidence of Ewing sarcoma or chondrosarcoma. There was a marginally statistically significant improvement in survival for Ewing sarcoma (hazard ratio (HR) per annum = 0.97; 95% CI 0.94 - 1.00; P = 0.06), although patients aged 15 - 39 years (n = 93) had worse overall survival than those aged 0 - 14 (n = 73; HR = 1.46; 95% CI 0.98 - 2.17; P = 0.06). There was no significant improvement in osteosarcoma survival (HR per annum = 0.98; 95% CI 0.95 - 1.01; P = 0.18).
Reasons for poorer survival in Ewing sarcoma patients aged 15 - 39 years and failure to significantly improve survival for osteosarcoma patients requires further investigation.
Malignant bone tumours comprise 0.7% of all cancer diagnoses in the UK . For all ages they have an age-standardised rate of 8 per 1,000,000 persons per year in males and 6 per 1,000,000 persons per year in females (standardised to the world population ). These tumours are the third most frequently occurring malignancy diagnosed in those aged 10 - 24 years and comprise more than twenty diagnostic sub-groups. Osteosarcoma is the most common sub-group, accounting for around a third of all diagnoses [3, 4].
Primary bone cancer is rarely diagnosed in children before the age of five or adults over the age of sixty . Incidence of osteosarcoma increases with age until a peak in late childhood or adolescence around the time of puberty, after which incidence declines. A second less pronounced peak occurs in older adults aged more than 65 years. Ewing sarcoma has an incidence peak in the late teenage years, whilst chondrosarcoma peaks in older adults (aged > 65 years) [4–6]. A small number of studies have explored the incidence and survival of childhood bone cancer [7–15]. However, even fewer studies have examined incidence and survival in those aged over 24 years.
We have previously analysed incidence and survival of bone cancer in children (aged 0 - 14 years) from northern England and the West Midlands . The aim of the present study was to extend the age range analysed to include cases aged up to 39 years old. It is important to analyse this age-range as the incidence of both osteosarcoma and Ewing sarcoma peak after childhood (in those aged more than 15 years). We describe the incidence and survival from osteosarcoma, chondrosarcoma and Ewing sarcoma diagnosed in 0 - 39 year olds in northern England during the period 1981 - 2002 and compare patients aged 15 - 39 years with those aged 0 - 14 years. It should be noted that the childhood cases aged 0 - 14 years from the region were also included in the previous analysis (82 osteosarcoma; 73 Ewing sarcoma; 2 chondrosarcoma) . The present study also updates previous analyses from northern England and the whole of Great Britain [9, 16].
Data were included for all patients aged 0 - 39 years registered during the period 1981 - 2002 by the Northern and Yorkshire Cancer Registry and Information Service (NYCRIS). This is a regional registry that records all cases of cancer and covers an area in the north of England with a population of approximately 6.6 million. The registry is population-based and has a very high level of ascertainment due to rigorous data collection procedures .
NYCRIS receives notifications of all malignancies diagnosed in the region from a variety of sources, the main source being pathology reports that are routinely submitted by all health care providers (National Health Service Trusts) in the area. Six months after diagnosis registry staff visit the hospital of primary treatment to manually extract additional clinical information from the patients' case notes. They check that tumour deaths correspond with the information on the original data source and amend when necessary.
In our study, records of primary malignant bone tumours registered between 1981 and 2002 in patients aged 0 - 39 years were extracted from NYCRIS. All tumours were categorised according to The World Health Organization Classification of Tumours system . Secondary and benign bone tumours were excluded from this study. Information available for each case included demographic data (sex; date of birth); tumour diagnosis (date; site and morphology) and follow-up (current status; date of death; date of last follow-up). Analyses focussed on the three main diagnostic sub-groups: osteosarcoma; Ewing sarcoma and chondrosarcoma.
Age-specific incidence rates per million persons per year were calculated based on annual mid-year population estimates for the study region obtained from Office for National Statistics. Comparisons of age-standardised incidence rates (ASRs) are only meaningful if they are standardised in the same way. The world standard has the most widespread use and calculation of world ASRs allows comparisons to be made with other published UK and international (especially European) studies [3, 9, 11, 15]. ASRs were calculated using the age-specific incidence rates for five-year age groups weighted using the standard world population (originally proposed by Segi, but modified by Doll and colleagues and constructed from the pooled populations of forty six representative countries that had accurate population census data) [2, 19–21]. Poisson regression was used to model the effects on incidence rate for time period of diagnosis (1981 - 1988, 1989 - 1995, 1996 - 2002); age group (0 - 14, 15 - 29, 30 - 39 years) and sex. Cases were followed up until 31st December 2005. Five-year survival rates were calculated for all cases diagnosed during the period 1981 - 2000 as follow up was only available for all cases until the end of 2005. Survival rates were calculated using Kaplan-Meier estimation  and differences in survival between diagnostic groups (osteosarcoma, Ewing sarcoma and chondrosarcoma) assessed using log-rank tests. Cox Proportional Hazards regression analysis was used to model the probability of survival in relation to age, sex and year of diagnosis. Statistical significance was taken to be P < 0.05 and marginal significance as 0.05 ≤ P < 0.1 in all analyses. All statistical analyses were performed using Stata version 10.
Number of cases and age-standardised incidence rates (ASR) per million persons per year by diagnostic group, sex and age-group (in years), 1981-2002
0 - 14
15 - 29
30 - 39
0 - 39
ASR (95% CI)
ASR (95% CI)
ASR (95% CI)
ASR (95% CI)
Incidence varied by age group (Table 1). Poisson regression models showed that after adjustment for sex and time period the incidence peaked among 15 - 29 year olds. The incidence rate ratios (IRRs) for those aged 15 - 29 years relative to 0 - 14 years were 2.04 (95% CI 1.55 - 2.68) for osteosarcoma; 22.33 (95% CI 5.38 - 92.73) for chondrosarcoma and 1.44 (95% CI 1.05 - 1.97) for Ewing sarcoma. The IRRs relative to the 0 - 14 age group for ages 30 - 39 were 0.45 (95% CI 0.28 - 0.75) for osteosarcoma; 34.34 (95% CI 8.26 - 142.76) for chondrosarcoma and 0.21 (95% CI 0.10 - 0.44) for Ewing sarcoma.
There were more male than female cases of all bone cancer combined (310 males, 199 females; P < 0.001) and for each of the sub-groups. The IRRs for males relative to females were 1.49 (95% CI 1.15 - 1.94) for osteosarcoma; 1.81 (95% CI 1.12 - 2.92) for chondrosarcoma and 1.42 (95% CI 1.04 - 1.93) for Ewing sarcoma.
Number of cases and age-standardised incidence rates (ASR) per million persons per year by diagnostic group, sex and time period
1981 - 1988
1989 - 1995
1996 - 2002
ASR (95% CI)
ASR (95% CI)
ASR (95% CI)
Percentage five-year survival for 0-39 year olds by diagnostic group, sex and time perioda
1981 - 1987
1988 - 1994
1995 - 2000
Rate (95% CI)
Rate (95% CI)
Rate (95% CI)
For osteosarcoma there was a non-statistically significant improvement in survival during the study period (HR per annum = 0.98; 95% CI 0.95 - 1.01; P = 0.18). There was no significant evidence that sex (P = 0.11) or age (P = 0.50) had any effect on survival. Survival rates for chondrosarcoma remained constant (HR per annum = 1.00; 95% CI 0.94 - 1.07; P = 0.89) and there was no evidence that sex (P = 0.46) or age (P = 1.00) had any significant effect on survival.
This study of primary bone cancer in 0 - 39 years olds in northern England is the most recent analysis that has examined incidence and survival for this age group. Cases were limited to those aged less than forty years because this is the upper age-limit for entry into most clinical trials [16, 23]. Furthermore, this age range coincides with the peak age-incidence distribution for the majority of malignant primary bone tumours. It is likely that a substantial proportion of the 0 - 39 year old patients have been treated according to trial protocols (although we did not have access to data on trial entry). The basic case incidence and survival data were accurately recorded by the registry. However, data on stage and treatment were not consistently and reliably recorded. Therefore, some of the differences in survival may be due to differences in case mix with respect to stage or treatment regime.
Although there is some evidence for an improvement in survival from Ewing sarcoma during the period 1981 - 2000, cases aged 15 - 39 years had worse outcome than those aged 0 - 14 years. In contrast, for osteosarcoma, there was no significant change in survival throughout the study period and no evidence that cases aged 15 - 39 years had worse outcome than childhood cases (aged 0 - 14 years).
The incidence rates reported in the present study were similar to those reported in other countries with mainly white populations. In addition, the predominance of osteosarcoma and Ewing sarcoma found in this study are also typical patterns reported in ethnically similar populations (5% were minority ethnic population) [24, 25].
Incidence of osteosarcoma, chondrosarcoma and Ewing sarcoma was higher among males than females. This is consistent with previous literature, which has reported that although males and females tend to show similar incidences in childhood [11, 15, 24], when an extended age range is included, all three diagnostic groups are more common in males .
Osteosarcoma and Ewing sarcoma both had incidence peaks in the 15 - 29 age group. This is consistent with previous studies, which have widely reported incidence of these two diagnostic groups to rise after the onset of puberty, when young people are undergoing a growth spurt and bones experience rapid growth [8, 11, 24].
This study found an increase in the incidence of osteosarcoma, but no temporal changes in the incidence of Ewing sarcoma and chondrosarcoma during the period 1981 - 2002. In both the USA and Europe, overall bone cancer incidence across all age groups has been reported to have remained steady over the last 30 years [25, 26].
We have previously analysed the survival of children resident in northern England and the West Midlands during the same time period . For children we found that whilst there was an improvement in survival from Ewing sarcoma, there was no improvement for osteosarcoma. The present study confirms that the lack of improvement in survival for osteosarcoma also applies at ages 15 - 39 years. However, it has indicated a worse outcome for Ewing sarcoma cases in age group 15 - 39 years. Another recent study from the USA analysed data from the Surveillance, Epidemiology and End Results Program and has found that there has been no statistically significant improvement in survival from osteosarcoma (at all ages) from 1984 to 2004 .
The most recent national data from Great Britain reported five-year survival rates of 53% and 51% for cases aged 0 - 39 years during 1990 - 1994 . Our data have shown that survival for northern England was better for osteosarcoma (58%) but worse for Ewing sarcoma (43%). Data for patients of all ages, from the United States National Cancer Database, also reported worse five-year survival (51.2%) for osteosarcoma and better five-year survival (50.2%) for Ewing sarcoma . Better survival of osteosarcoma compared with the US study is likely to be due to the exclusion of patients aged more than 40 years from the present study. Another study of osteosarcoma from Finland reported five-year survival of 65% during 1981 - 1990 . However, survival rates in northern England were similar to 15 - 24 year olds from a multi-centre (twenty countries) European study, which found five-year survival rates of 58% for osteosarcoma and 42% for Ewing sarcoma .
A number of studies have reported worse survival from osteosarcoma in adults aged more than forty years [27, 28, 31, 32]. It is very well recognized that those aged more than 40 years have poorer prognosis than younger patients . In our study of 0 - 39 year olds, we only found worse outcome for cases of Ewing sarcoma aged 15 - 39 years, but not for osteosarcoma. However, some other studies have specifically studied adolescent and young adult cases and have indicated worse outcome in this age group for both osteosarcoma and Ewing sarcoma compared with children [22, 34, 35].
The worse survival in cases of Ewing sarcoma aged 15 - 39 years is consistent with previous studies and may be due to a number of different factors including treatment, delays in diagnosis, metastatic disease, site and the stage of the tumour [36–39]. We were not able to investigate these factors within the scope of the present study. However, these issues will be addressed in future studies that focus on the Teenage and Young Adult (TYA) age group. A special National Cancer Research Institute TYA Clinical Studies Development Group has been formed and will oversee analyses of a new national TYA cancer dataset.
This study has found an increase in the incidence of osteosarcoma, but no change in the incidence of Ewing sarcoma or chondrosarcoma. There was a lack of improved survival from osteosarcoma in both childhood and young adult cases and worse survival in Ewing sarcoma patients aged 15 - 39 years compared to those aged 0 - 14 years. Further research is needed to elicit the reasons for the failure to improve survival for osteosarcoma patients and for worse survival in older Ewing sarcoma patients.
We thank the Northern and Yorkshire Cancer Registry and Information Service (NYCRIS) for providing data for this study. We also thank the following for financial support: The Bone Cancer Research Trust, Candlelighters Trust and the North of England Children's Cancer Research Fund. We are very grateful to Dr Quentin Campbell-Hewson for critical review of treatment data.
- Office for National Statistics: Cancer Statistics registrations: registrations of cancer diagnosed in 2005, England. Series MB1 no.36. 2008, London UK: HMSOGoogle Scholar
- Smith PG: Comparison between registries: age-standardized rates. Cancer Incidence in Five Continents. Edited by: Parkin DM, Muir CS, Whelan SL, Gao YT, Ferlay J, Powell J. 1992, Lyon, France: IARC Scientific Publications, VI:Google Scholar
- Curado MP, Edwards B, Shin HR, Storm H, Ferlay J, Heanue M, Boyle P: Cancer Incidence in Five Continents. 2007, Lyon, France: IARC Scientific Publications No. 160, IX:Google Scholar
- Ottaviani G, Jaffe N: The epidemiology of osteosarcoma. Cancer Treat Res. 2010, 152: 3-13. full_text.View ArticleGoogle Scholar
- Skubitz KM, D'Adamo DR: Sarcoma. Mayo Clin Proc. 2007, 82: 1409-1432. 10.4065/82.11.1409.View ArticlePubMedGoogle Scholar
- Weber K, Damron TA, Frassica FJ, Sim FH: Malignant bone tumors. Instr Course Lect. 2008, 57: 673-688.PubMedGoogle Scholar
- Ajiki W, Hanai A, Tsukuma H, Hiyama T, Fujimoto I: Incidence of childhood cancer in Osaka, Japan, 1971-1988: reclassification of registered cases by Birch's scheme using information on clinical diagnosis, histology and primary site. Jpn J Cancer Res. 1994, 85: 139-146.View ArticlePubMedGoogle Scholar
- Gurney JG, Davis S, Severson RK, Fang JY, Ross JA, Robison LL: Trends in cancer incidence among children in the US. Cancer. 1996, 78: 532-541. 10.1002/(SICI)1097-0142(19960801)78:3<532::AID-CNCR22>3.0.CO;2-Z.View ArticlePubMedGoogle Scholar
- Cotterill SJ, Parker L, Malcolm AJ, Reid M, More l, Craft AW: Incidence and survival for cancer in children and young adults in the North of England, 1968-1995: a report from the Northern Region Young Persons' Malignant Disease Registry. Br J Cancer. 2000, 83: 397-403. 10.1054/bjoc.2000.1313.View ArticlePubMedPubMed CentralGoogle Scholar
- McNally RJ, Kelsey AM, Cairns DP, Taylor GM, Eden OB, Birch JM: Temporal increases in the incidence of childhood solid tumors seen in Northwest England (1954-1998) are likely to be real. Cancer. 2001, 92: 1967-1976. 10.1002/1097-0142(20011001)92:7<1967::AID-CNCR1716>3.0.CO;2-#.View ArticlePubMedGoogle Scholar
- Stiller CA, Bielack SS, Jundt G, Steliarova-Foucher E: Bone tumours in European children and adolescents, 1978-1997. Report from the Automated Childhood Cancer Information System project. Eur J Cancer. 2006, 42: 2124-2135. 10.1016/j.ejca.2006.05.015.View ArticlePubMedGoogle Scholar
- Stiller CA: Childhood Cancer in Britain: Incidence, Survival, Mortality. 2007, Oxford, UK: Oxford University PressView ArticleGoogle Scholar
- Arndt V, Lacour B, Steliarova-Foucher E, Spix C, Znaor A, Pastore G, Stiller C, Brenner H: Up-to-date monitoring of childhood cancer long-term survival in Europe: tumours of the sympathetic nervous system, retinoblastoma, renal and bone tumours, and soft tissue sarcomas. Ann Oncol. 2007, 18: 1722-1733. 10.1093/annonc/mdm189.View ArticlePubMedGoogle Scholar
- Magnanti BL, Dorak MT, Parker L, Craft AW, James PW, McNally RJ: Sex-specific incidence and temporal trends in solid tumours in young people from Northern England, 1968-2005. BMC Cancer. 2008, 8: 89-10.1186/1471-2407-8-89.View ArticlePubMedPubMed CentralGoogle Scholar
- Eyre R, Feltbower RG, Mubwandarikwa E, Jenkinson HC, Parkes S, Birch JM, Eden TO, James PW, McKinney PA, Pearce MS, McNally RJ: Incidence and survival of childhood bone cancer in northern England and the West Midlands, 1981-2002. Br J Cancer. 2009, 100: 188-193. 10.1038/sj.bjc.6604837.View ArticlePubMedPubMed CentralGoogle Scholar
- Stiller CA, Passmore SJ, Kroll ME, Brownbill PA, Wallis JC, Craft AW: Patterns of care and survival for patients aged under 40 years with bone sarcoma in Britain, 1980-1994. Br J Cancer. 2006, 94: 22-29. 10.1038/sj.bjc.6602885.View ArticlePubMedPubMed CentralGoogle Scholar
- Cancer Registries Peer Review Team: NHS National Cancer Peer Review Programme 2004-2007 Cancer Peer Review Report: Northern & Yorkshire Cancer Registry and Information Service. 2007, National Cancer Action TeamGoogle Scholar
- Fletcher CD, Unni KK, Mertens F: World Health Organization Classification of Tumours. Pathology and Genetics: Tumours of Soft Tissue and Bone. 2002, Lyon, France: IARC PressGoogle Scholar
- Bray F: Age-standardization. Cancer Incidence in Five Continents. Edited by: Parkin DM, Whelan SL, Gao YT, Ferlay J, Teppo L, Thomas DB. 2002, Lyon, France: IARC Scientific Publications, VIII:Google Scholar
- Segi M: Cancer mortality for selected sites in 24 countries (1950-57). 1960, Sendai, Japan: Tohoku University School of Public HealthGoogle Scholar
- Doll R, Payne P, Waterhouse J: Cancer Incidence in Five Continents: A Technical Report. 1966, Berlin, Germany: Springer-Verlag (for UICC)View ArticleGoogle Scholar
- Kaplan EL, Meier P: Non-parametric estimation from incomplete observations. J Am Stat Assoc. 1958, 53: 457-481. 10.2307/2281868.View ArticleGoogle Scholar
- Voûte PA, Souhami RL, Nooij M, Somers R, Cortès-Funes H, van der Eijken JW, Pringle J, Hogendoorn PC, Kirkpatrick A, Uscinska BM, van Glabbeke M, Machin D, Weeden S: A phase II study of cisplatin, ifosfamide and doxorubicin in perable primary, axial skeletal and metastatic osteosarcoma. European Osteosarcoma Intergroup (EOI). Ann Oncol. 1999, 10: 1211-1218. 10.1023/A:1008361612767.View ArticlePubMedGoogle Scholar
- Grovas A, Fremgen A, Rauck A, Ruymann FB, Hutchinson CL, Winchester DP, Menck HR: The National Cancer Data Base report on patterns of childhood cancer in the United States. Cancer. 1997, 80: 2321-2332. 10.1002/(SICI)1097-0142(19971215)80:12<2321::AID-CNCR14>3.0.CO;2-W.View ArticlePubMedGoogle Scholar
- Altekruse SF, Kosary CL, Krapcho M, Neyman N, Aminou R, Waldron W, Ruhl J, Howlader N, Tatalovich Z, Cho H, Mariotto A, Eisner MP, Lewis DR, Cronin K, Chen HS, Feuer EJ, Stinchcomb DG, Edwards BK: SEER Cancer Statistics Review, 1975-2007. 2010, National Cancer Institute. Bethesda, MD, based on November 2009 SEER data submission, posted to the SEER web siteGoogle Scholar
- Coleman MP, Estève J, Damiecki P, Arslan A, Renard H: Trends in cancer incidence and mortality. 1993, Lyon, France: IARC Scientific Publications No. 121Google Scholar
- Mirabello L, Troisi RJ, Savage SA: Osteosarcoma incidence and survival rates from 1973 to 2004: data from the Surveillance, Epidemiology, and End Results Program. Cancer. 2009, 115: 1531-1543. 10.1002/cncr.24121.View ArticlePubMedPubMed CentralGoogle Scholar
- Damron TA, Ward WG, Stewart A: Osteosarcoma, chondrosarcoma, and Ewing's sarcoma: National Cancer Data Base Report. Clin Orthop Relat Res. 2007, 459: 40-47. 10.1097/BLO.0b013e318059b8c9.View ArticlePubMedGoogle Scholar
- Sampo MM, Tarkkanen M, Kivioja AH, Takinen MH, Sankila R, Böhling TO: Osteosarcoma in Finland from 1971 through 1990: a nationwide study of epidemiology and outcome. Acta Orthop. 2008, 79: 861-866. 10.1080/17453670810016966.View ArticlePubMedGoogle Scholar
- Gatta G, Capocaccia R, De Angelis R, Stiller C, Coebergh JW, EUROCARE Working Group: Cancer survival in European adolescents and young adults. Eur J Cancer. 2003, 39: 2600-2610. 10.1016/j.ejca.2003.09.004.View ArticlePubMedGoogle Scholar
- Carsi B, Rock MG: Primary osteosarcoma in adults older than 40 years. Clin Orthop Relat Res. 2002, 397: 53-61. 10.1097/00003086-200204000-00008.View ArticlePubMedGoogle Scholar
- Grimer RJ, Cannon SR, Taminiau AM, Bielack S, Kempf-Bielack B, Windhager R, Dominkus M, Saeter G, Bauer H, Meller I, Szendroi M, Folleras G, San-Julian M, van der Eijken J: Osteosarcoma over the age of forty. Eur J Cancer. 2003, 39: 157-163. 10.1016/S0959-8049(02)00478-1.View ArticlePubMedGoogle Scholar
- Harting MT, Lally KP, Andrassy RJ, Vaporciyan AA, Cox CS, Hayes-Jordan A, Blakely ML: Age as a prognostic factor for patients with osteosarcoma: an analysis of 438 patients. J Cancer Res Clin Oncol. 2010, 136: 561-570. 10.1007/s00432-009-0690-5.View ArticlePubMedGoogle Scholar
- Stiller CA, Desandes E, Danon SE, Izarzugaza I, Ratiu A, Vassileva-Valerianova Z, Steliarova-Foucher E: Cancer incidence and survival in European adolescents (1978-1997). Report from the Automated Childhood Cancer Information System project. Eur J Cancer. 2006, 42: 2006-2018. 10.1016/j.ejca.2006.06.002.View ArticlePubMedGoogle Scholar
- Desandes E, Lacour B, Belot A, White-Koning M, Velten M, Tretarre B, Sauleau EA, Maarouf N, Guizard AV, Delafosse P, Danzon A, Cotte C, Boutreux S, Brugières L: Cancer incidence and survival among adolescents and young adults in France [French]. Bull Cancer. 2007, 94: 331-337.PubMedGoogle Scholar
- Cotterill SJ, Ahrens S, Paulussen M, Jürgens HF, Voûte PA, Gadner H, Craft AW: Prognostic factors in Ewing's tumor of bone: analysis of 975 patients from the European Intergroup Cooperative Ewing's Sarcoma Study Group. J Clin Oncol. 2000, 18: 3108-3114.PubMedGoogle Scholar
- Bacci G, Ferrari S, Bertoni F, Rimondini S, Longhi A, Bacchini P, Forni C, Manfrini M, Donati D, Picci P: Prognostic factors in nonmetastatic Ewing's sarcoma of bone treated with adjuvant chemotherapy: analysis of 359 patients at the Istituto Ortopedico Rizzoli. J Clin Oncol. 2000, 18: 4-11.PubMedGoogle Scholar
- Grier HE, Krailo MD, Tarbell NJ, Link MP, Fryer CJ, Pritchard DJ, Gebhardt MC, Dickman Perlman EJ, Meyers PA, Donaldson SS, Moore S, Rausen AR, Vietti TJ, Miser JS: Addition of ifosfamide and etoposide to standard chemotherapy for Ewing's sarcoma and primitive neuroectodermal tumor of bone. N Engl J Med. 2003, 348: 694-701. 10.1056/NEJMoa020890.View ArticlePubMedGoogle Scholar
- Rodríguez-Galindo C, Liu T, Krasin MJ, Wu J, Billups CA, Daw NC, Spunt SL, Rao BN, Santana VM, Navid F: Analysis of prognostic factors in Ewing sarcoma family of tumors: review of St. Jude Children's Research Hospital studies. Cancer. 2007, 110: 375-384. 10.1002/cncr.22821.View ArticlePubMedGoogle Scholar
- The pre-publication history for this paper can be accessed here:http://www.biomedcentral.com/1471-2407/10/357/prepub
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