Tondel M, Carlsson G, Hardell L, Eriksson M, Jakobsson S, Flodin U, Sköldestig A, Axelson O
Dept of Occupational and Environmental Medicine, University Hospital, Linköping, Sweden.
Health Phys. 1996 Dec;71(6):947-50. doi: 10.1097/00004032-199612000-00012.
The incidence of neoplasms in childhood and adolescence in northern and central Sweden before and after the radioactive fallout from the Chernobyl accident was investigated in an ecologic study, 1978 to 1992. The study included all parishes in the six most contaminated counties classified after aerial mapping of ground radiation from 137Cs and investigated 746 cases of neoplasms in ages 0-19 y, diagnosed in the six counties. Incidence and relative risks of neoplasms were compared in areas with high, intermediate, and low contamination after versus before the Chernobyl accident in 1986. A continuous increase of brain tumor incidence in the ages 0-19 y during the period 1978-92 without clear relationship to the Chernobyl fallout was discovered. No clear relationship between the incidence of brain tumor and the exposure to varying levels of radiation from 137Cs was apparent. A somewhat decreased relative risk of acute lymphatic leukemia appeared in areas with increased exposure. Other neoplasms showed no changes in incidence over time or with regard to exposure. Until now, there is no indication that the Chernobyl accident has affected the incidence of childhood and adolescence neoplasms in Sweden, but it is still too early for any final conclusion about the effect of this event.
在一项生态学研究中，对1978年至1992年瑞典北部和中部在切尔诺贝利事故放射性沉降前后儿童和青少年肿瘤的发病率进行了调查。该研究涵盖了根据137Cs地面辐射航空测绘划分的六个污染最严重县的所有教区，并调查了这六个县诊断出的746例0至19岁的肿瘤病例。比较了1986年切尔诺贝利事故前后高污染、中等污染和低污染地区肿瘤的发病率和相对风险。发现1978年至1992年期间0至19岁脑肿瘤发病率持续上升，且与切尔诺贝利沉降物无明显关系。脑肿瘤发病率与137Cs不同辐射水平暴露之间无明显关系。暴露增加地区急性淋巴细胞白血病的相对风险略有降低。其他肿瘤的发病率随时间或暴露情况未发生变化。到目前为止，没有迹象表明切尔诺贝利事故影响了瑞典儿童和青少年肿瘤的发病率，但对于该事件的影响得出任何最终结论仍为时过早。
