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Bone mineral density is compromised in very long-term survivors of irradiated childhood brain tumor
Oulu Univ Hosp, Dept Pediat & Adolescence, PEDEGO Res Unit, Oulu, Finland;Univ Oulu, Oulu, Finland.
Kuopio Univ Hosp, Dept Pediat & Adolescence, Kuopio, Finland.
Turku Univ Hosp, Dept Pediat & Adolescence, Turku, Finland;Turku Univ, Turku, Finland.
Tampere Univ Hosp, Dept Pediat & Adolescence, Tampere, Finland.
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2018 (English)In: Acta Oncologica, ISSN 0284-186X, E-ISSN 1651-226X, Vol. 57, no 5, p. 665-674Article in journal (Refereed) Published
Abstract [en]

Introduction: The increase in the number of childhood brain tumor survivors warrants detailed research to increase our knowledge regarding the possible physical and psychosocial adverse outcomes of tumor and tumor therapy. The aim of this study was to evaluate the current bone health by measuring the bone mineral density (BMD) in irradiated, adult long-term survivors of childhood brain tumors.Material and methods: We studied a national cohort of 74 adult survivors of childhood brain tumors treated with irradiation in Finland between 1970 and 2008. Dual X-ray absorptiometry (DXA) was performed for the femoral necks, total hips, and lumbar spine. Laboratory tests were conducted for evaluating the pituitary, thyroid, and gonadal functions. The participants were interviewed, examined clinically, and the disease and treatment related data were retrieved from the patient files.Results: One fourth of the patients (23.6%) had sex- and age-normalized z-scores below the expected range for age (z-score -2.0). Mean BMD scores were decreased in all the DXA measurement sites. Male sex was associated with low BMD (p<.05), while body mass index (BMI) had a significant positive association with BMD (p<.01). Mode of irradiation (with or without spinal irradiation) or inclusion of chemotherapy in the treatment did not affect BMD significantly. However, patients with a ventriculoperitoneal shunt had lower BMD than those without a shunt (p<.05). Follicle stimulating hormone (FSH) and luteinizing hormone (LH) were negatively associated with BMD in women (p<.05). However, a higher cumulative dose of glucocorticoids during treatment was not associated with lower BMD, while low BMD was significantly associated with previous fractures in long bones.Discussion: Low BMD should be taken in consideration in treatment of irradiated childhood brain tumor survivors especially in those with previous fractures in long bones.

Place, publisher, year, edition, pages
Taylor & Francis, 2018. Vol. 57, no 5, p. 665-674
National Category
Cancer and Oncology
Identifiers
URN: urn:nbn:se:uu:diva-353196DOI: 10.1080/0284186X.2018.1431401ISI: 000430114000014PubMedID: 29374996OAI: oai:DiVA.org:uu-353196DiVA, id: diva2:1216860
Funder
Novo Nordisk
Note

Arja H. Harila-Saari and Marja K. Ojaniemia contributed equally to this work

Available from: 2018-06-12 Created: 2018-06-12 Last updated: 2018-06-12Bibliographically approved

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