Risk of hematological malignancies from CT radiation exposure in children, adolescents and young adults [* Cross-Reference *]

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Bosch de Basea Gomez, Magda; Thierry-Chef, Isabelle; Harbron, Richard; Hauptmann, Michael; Byrnes, Graham; Bernier, Maria Odile; Le Cornet, Lucian; Dabin, Jérémie; Ferro, Gilles; Istad, Tore S.; Jahnen, Andreas; Lee, Choonsik; Maccia, Carlo; Malchair, Françoise; Olerud, Hilde; Simon, Steven L.; Figuerola, Jordi; Peiro, Anna; Engels, Hilde; Johansen, Christoffer; Blettner, Maria; Kaijser, Magnus; Kjaerheim, Kristina; Berrington de Gonzalez, Amy; Journy, Neige; Meulepas, Johanna M.; Moissonnier, Monika; Nordenskjold, Arvid; Pokora, Roman; Ronckers, Cecile; Schüz, Joachim; Kesminiene, Ausrele; Cardis, Elisabeth, 2026, "Risk of hematological malignancies from CT radiation exposure in children, adolescents and young adults [* Cross-Reference *]", https://lore.list.lu/citation?persistentId=perma:LIST.LLRWCV, LIST Open Repository, V1
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Description
Over one million European children undergo computed tomography (CT) scans annually. Although moderate- to high-dose ionizing radiation exposure is an established risk factor for hematological malignancies, risks at CT examination dose levels remain uncertain. Here we followed up a multinational cohort (EPI-CT) of 948,174 individuals who underwent CT examinations before age 22 years in nine European countries. Radiation doses to the active bone marrow were estimated on the basis of body part scanned, patient characteristics, time period and inferred CT technical parameters. We found an association between cumulative dose and risk of all hematological malignancies, with an excess relative risk of 1.96 (95% confidence interval 1.10 to 3.12) per 100 mGy (790 cases). Similar estimates were obtained for lymphoid and myeloid malignancies. Results suggest that for every 10,000 children examined today (mean dose 8 mGy), 1–2 persons are expected to develop a hematological malignancy attributable to radiation exposure in the subsequent 12 years. Our results strengthen the body of evidence of increased cancer risk at low radiation doses and highlight the need for continued justification of pediatric CT examinations and optimization of doses. (2023-12-01)
***This entry has been automatically imported via Infodoc(ASO) CSV by LIST harvest scripts. Please refer to https://doi.org/10.1038/s41591-023-02620-0 for the original and latest version of the dataset and data downloads*** (2026-06-19)
Subject Computer and Information Science
Keyword undergo computed tomography, children undergo computed, million European children, European children undergo, scans annually
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