Environmental Radiation Surveillance, Radiation and Nuclear Safety Authority, Laippatie 4, FI-00881 Helsinki, Finland.
Cancer Epidemiol. 2013 Oct;37(5):585-92. doi: 10.1016/j.canep.2013.05.006. Epub 2013 Jun 22.
We studied whether incidence of all cancer sites combined was associated with the radiation exposure due to fallout from the Chernobyl accident in Finland. An emphasis was on the first decade after the accident to assess the suggested "promotion effect".
The segment of Finnish population with a stable residence in the first post-Chernobyl year (2 million people) was studied. The analyses were based on a 250m × 250m grid squares covering all of Finland and all cancer cases except cancers of the breast, prostate and lung. Cancer incidence in four exposure areas (based on first-year dose due to external exposure <0.1 mSv, 0.1-1.3, 0.3-0.5, or ≥ 0.5 mSv) was compared before the Chernobyl accident (1981-1985) and after it (1988-2007) taking into account cancer incidence trends for a longer period prior to the accident (since 1966).
There were no systematic differences in the cancer incidence in relation to radiation exposure in any calendar period, or any subgroup by sex or age at accident.
The current large and comprehensive cohort analysis of the relatively low levels of the Chernobyl fallout in Finland did not observe a cancer promotion effect.
我们研究了所有癌症部位的发病率是否与切尔诺贝利事故在芬兰产生的辐射沉降物有关。本研究重点关注事故发生后的第一个十年，以评估所谓的“促进效应”。
研究了在切尔诺贝利事故后的第一年（200 万人）稳定居住在芬兰的人群。分析基于一个 250m×250m 的网格覆盖整个芬兰，除乳腺癌、前列腺癌和肺癌外，所有癌症病例都包含在分析中。在切尔诺贝利事故之前（1981-1985 年）和之后（1988-2007 年），根据最初一年因外部暴露导致的剂量<0.1mSv、0.1-1.3mSv、0.3-0.5mSv 或≥0.5mSv ，比较四个暴露区（基于最初一年因外部暴露导致的剂量）的癌症发病率，并考虑到事故发生前较长时期（自 1966 年起）的癌症发病率趋势。
在任何时期或任何按性别或事故时年龄划分的亚组中，癌症发病率与辐射暴露之间均无系统性差异。
目前对芬兰切尔诺贝利沉降物水平相对较低的大规模综合队列分析并未观察到癌症促进效应。
