title: Infant leukaemia after in utero exposure to radiation from Chernobyl.
abstract: There has been no documented increase in childhood leukaemia following the Chernobyl accident. However, different forms of childhood leukaemia may not be equally susceptible to radiation carcinogenesis. Infant leukaemia is a distinct form associated with a specific genetic abnormality. Outside the former Soviet Union, contamination resulting from the Chernobyl accident has been highest in Greece and Austria and high also in the Scandinavian countries. All childhood leukaemia cases diagnosed throughout Greece since 1 January 1980 have been recorded. Here we report that infants exposed in utero to ionizing radiation from the Chernobyl accident had 2.6 times the incidence of leukaemia compared to unexposed children (95% confidence interval, 1.4 to 5.1; P approximately 0.003), and those born to mothers residing in regions with high radioactive fallout were at higher risk of developing infant leukaemia. No significant difference in leukaemia incidence was found among children aged 12 to 47 months. Preconceptional irradiation had no demonstrable effect on leukaemia risk at any of the studied age groups.
authors.affiliation: Harvard Center for Cancer Prevention, Boston, Massachusetts 02115, USA.
authors.forename: E
authors.initials: E
authors.lastname: Petridou
authors.forename: D
authors.initials: D
authors.lastname: Trichopoulos
authors.forename: N
authors.initials: N
authors.lastname: Dessypris
authors.forename: V
authors.initials: V
authors.lastname: Flytzani
authors.forename: S
authors.initials: S
authors.lastname: Haidas
authors.forename: M
authors.initials: M
authors.lastname: Kalmanti
authors.forename: D
authors.initials: D
authors.lastname: Koliouskas
authors.forename: H
authors.initials: H
authors.lastname: Kosmidis
authors.forename: F
authors.initials: F
authors.lastname: Piperopoulou
authors.forename: F
authors.initials: F
authors.lastname: Tzortzatou
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D004781:Environmental Exposure; D005260:Female; D006115:Greece / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D007223:Infant; D007938:Leukemia / Q000453:epidemiology* / Q000209:etiology; D008297:Male; D018811:Maternal Exposure; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology* / Q000209:etiology; D018812:Paternal Exposure; D011210:Power Plants; D011247:Pregnancy; D011847:Radioactive Fallout; D018788:Radioactive Hazard Release; D014455:Ukraine / Q000453:epidemiology
chemical_list: D011847:Radioactive Fallout