Risk of Cancer Among Workers Exposed to Trichloroethylene: Analysis of Three Nordic Cohort Studies

被引:45
作者
Hansen, Johnni [1 ]
Sallmen, Markku [2 ]
Selden, Anders I. [3 ]
Anttila, Ahti [4 ]
Pukkala, Eero [4 ]
Andersson, Kjell [3 ]
Bryngelsson, Ing-Liss [3 ]
Raaschou-Nielsen, Ole [1 ]
Olsen, Jorgen H. [1 ]
McLaughlin, Joseph K. [5 ]
机构
[1] Danish Canc Soc Res Ctr, DK-2100 Copenhagen, Denmark
[2] Finnish Inst Occupat Hlth, Helsinki, Finland
[3] Orebro Univ Hosp, Dept Occupat & Environm Med, Orebro, Sweden
[4] Finnish Canc Registry, Inst Stat & Epidemiol Canc Res, FIN-00170 Helsinki, Finland
[5] Int Epidemiol Inst, Rockville, MD USA
来源
JNCI-JOURNAL OF THE NATIONAL CANCER INSTITUTE | 2013年 / 105卷 / 12期
关键词
NON-HODGKIN-LYMPHOMA; OCCUPATIONAL-EXPOSURE; TRICHLOROACETIC-ACID; CHLORINATED SOLVENTS; MORTALITY; TOBACCO;
D O I
10.1093/jnci/djt107
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Trichloroethylene (TCE) is a widely used chlorinated solvent with demonstrated carcinogenicity in animal assays. Some epidemiologic studies have reported increased risk of cancer of the kidney, cervix, liver and biliary passages, non-Hodgkin lymphoma, and esophageal adenocarcinoma. We established a pooled cohort, including 5553 workers with individual documented exposure to TCE in Finland, Sweden, and Denmark. Study participants were monitored for the urinary TCE metabolite trichloroacetic acid from 1947 to 1989 and followed for cancer. Standardized incidence ratios (SIRs) were calculated based on cancer incidence rates in the three national populations. Cox proportionate hazard analyses were used for internal comparisons. Tests of statistical significance are two-sided. Overall, 997 cases of cancer (n 683 in men; n 314 in women) were identified during 154 778 person-years of follow-up. We observed statistically significant elevated standardized incidence ratios for primary liver cancer (1.93; 95% confidence interval [CI] 1.19 to 2.95) and cervical cancer (2.31; 95% CI 1.32 to 3.75). The standardized incidence ratio for kidney cancer was 1.01 (95% CI 0.70 to 1.42) based on 32 cases; we did not observe a statistically significant increased risk of non-Hodgkins lymphoma (SIR 1.26; 95% CI 0.89 to 1.73) or esophageal adenocarcinoma (SIR 1.84; 95% CI 0.65 to 4.65). Tobacco- and alcohol-associated cancers were not statistically significantly increased. Our results suggest TCE exposure is possibly associated with an increased risk for liver cancer. The relationship between TCE exposure and risks of cancers of low incidence and those with confounding by lifestyle and other factors not known in our cohort require further study.
引用
收藏
页码:869 / 877
页数:9
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