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. 2002 Sep;59(9):613–619. doi: 10.1136/oem.59.9.613

Cancer at sea: a case-control study among male Finnish seafarers

H Saarni 1, J Pentti 1, E Pukkala 1
PMCID: PMC1740353  PMID: 12205234

Abstract

Aims: To study the possible work related reasons for the increased incidence of many cancers among seafarers.

Methods: A case-control study, nested in a cohort of all male seafarers (n = 30 940) who, according to the files of the Seamen's Pension Fund, had worked on board Finnish ships for any time during the period 1960–80. Cases of cancer of the lung, nervous system, kidney, and pancreas, leukaemia, lymphoma, and all cases histologically defined as mesotheliomas were identified from the Finnish Cancer Registry in 1967–92. The preceding numbers of years at sea in various occupational categories were collected according to the type of ship (dry cargo ship, tanker, passenger vessel, icebreaker, other vessel).

Results: The incidence for lung cancer among engine crew increased with the increase in employment time, the odds ratio (OR) after three years being 1.68 (95% CI 1.17 to 2.41). The OR of lung cancer for deck officers was 0.42 (95% CI 0.29 to 0.61). Deck personnel on icebreakers had a significantly increased risk of lung cancer ≥20 years after first employment (OR 3.41, 95% CI 1.23 to 9.49). The OR for mesothelioma among engine crew with a latency of 20 years was 9.75 (95% CI 1.88 to 50.6). The OR for renal cancer among deck officers after three years employment was 2.15 (95% CI 1.14 to 4.08), but there was no increase by employment time or by latency. A rise of OR for lymphoma was detected among deck personnel on tankers, if the employment had lasted over three years (OR 2.78, 95% CI 0.98 to 7.92). The risk pattern for leukaemia was similar to that of lymphoma, the OR among deck personnel on tankers varying from 2.26 (95% CI 1.01 to 5.06) to 6.86 (95% CI 1.62 to 28.8) depending on the length of employment.

Conclusions: Results indicate that occupational exposures of deck crews on tankers add to their risk of renal cancer, leukaemia, and possibly lymphoma. Engine crews have an asbestos related risk of mesothelioma, and the engine room conditions also seem to increase risk of lung cancer.

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Selected References

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  1. Andrews K. W., Savitz D. A. Accuracy of industry and occupation on death certificates of electric utility workers: implications for epidemiologic studies of magnetic fields and cancer. Bioelectromagnetics. 1999 Dec;20(8):512–518. doi: 10.1002/(sici)1521-186x(199912)20:8<512::aid-bem5>3.0.co;2-m. [DOI] [PubMed] [Google Scholar]
  2. Baksaas I., Lund E., Skjerven J. E., Langård S., Vellar O. D., Aarø L. E. Kreft blant sjømenn. En gruppeundersøkelse. Tidsskr Nor Laegeforen. 1983 Dec 10;103(34-36):2317–2320. [PubMed] [Google Scholar]
  3. Blair A., Hoar S. K., Walrath J. Comparison of crude and smoking-adjusted standardized mortality ratios. J Occup Med. 1985 Dec;27(12):881–884. [PubMed] [Google Scholar]
  4. Dolin P. J., Cook-Mozaffari P. Occupation and bladder cancer: a death-certificate study. Br J Cancer. 1992 Sep;66(3):568–578. doi: 10.1038/bjc.1992.316. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Greenberg M. Cancer mortality in merchant seamen. Ann N Y Acad Sci. 1991 Dec 31;643:321–332. doi: 10.1111/j.1749-6632.1991.tb24479.x. [DOI] [PubMed] [Google Scholar]
  6. Levin L. I., Silverman D. T., Hartge P., Fears T. R., Hoover R. N. Smoking patterns by occupation and duration of employment. Am J Ind Med. 1990;17(6):711–725. doi: 10.1002/ajim.4700170606. [DOI] [PubMed] [Google Scholar]
  7. Moen B. E., Hollund B. E., Berntsen M., Flo R., Kyvik K. R., Riise T. Chemical exposure of deck crew on product tankers loading the cargo with the hatches open. Bull Inst Marit Trop Med Gdynia. 1993;44-45(1-4):65–73. [PubMed] [Google Scholar]
  8. Moen B. E., Hollund B. E., Berntsen M., Flo R., Kyvik K. R., Riise T. Exposure of the deck crew to carcinogenic agents on oil product tankers. Ann Occup Hyg. 1995 Jun;39(3):347–361. doi: 10.1016/0003-4878(95)00005-y. [DOI] [PubMed] [Google Scholar]
  9. Moen B. E., Hollund B. E., Berntsen M., Flo R., Kyvik K. R., Riise T. Occupational exposure of deck crews to carcinogenic agents on crude oil tankers. Am J Ind Med. 1995 Apr;27(4):555–564. doi: 10.1002/ajim.4700270408. [DOI] [PubMed] [Google Scholar]
  10. Nilsson R. I., Carneskog J., Järvholm B. G., Nordlinder R. G. Acute nonlymphatic leukemia among deck officers on coastal tankers: a report of two cases. Am J Ind Med. 1988;14(6):657–659. doi: 10.1002/ajim.4700140605. [DOI] [PubMed] [Google Scholar]
  11. Nordlinder R., Ramnäs O. Exposure to benzene at different work places in Sweden. Ann Occup Hyg. 1987;31(3):345–355. doi: 10.1093/annhyg/31.3.345. [DOI] [PubMed] [Google Scholar]
  12. Plant M. A. Occupations, drinking patterns and alcohol-related problems: conclusions from a follow-up study. Br J Addict Alcohol Other Drugs. 1979 Sep;74(3):267–273. doi: 10.1111/j.1360-0443.1979.tb01347.x. [DOI] [PubMed] [Google Scholar]
  13. Pukkala E. Cancer incidence among Finnish oil refinery workers, 1971-1994. J Occup Environ Med. 1998 Aug;40(8):675–679. doi: 10.1097/00043764-199808000-00003. [DOI] [PubMed] [Google Scholar]
  14. Pukkala E., Saarni H. Cancer incidence among Finnish seafarers, 1967-92. Cancer Causes Control. 1996 Mar;7(2):231–239. doi: 10.1007/BF00051299. [DOI] [PubMed] [Google Scholar]
  15. Rafnsson V., Jóhannesdóttir S. G., Oddsson H., Benediktsson H., Tulinius H., Magnússon G. Mortality and cancer incidence among marine engineers and machinists in Iceland. Scand J Work Environ Health. 1988 Jun;14(3):197–200. doi: 10.5271/sjweh.1931. [DOI] [PubMed] [Google Scholar]
  16. Selikoff I. J., Lilis R., Levin G. Asbestotic radiological abnormalities among United States merchant marine seamen. Br J Ind Med. 1990 May;47(5):292–297. doi: 10.1136/oem.47.5.292. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Spirtas R., Heineman E. F., Bernstein L., Beebe G. W., Keehn R. J., Stark A., Harlow B. L., Benichou J. Malignant mesothelioma: attributable risk of asbestos exposure. Occup Environ Med. 1994 Dec;51(12):804–811. doi: 10.1136/oem.51.12.804. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Tenfjord O. W., Borchgrevink C. F., Vaa T., Vellar O. D., Aarø L. E. Risikofaktorer for koronar hjertesykdom hos sjømenn. Et bedriftslegemateriale fra Wilh. Wilhelmsens rederi. Tidsskr Nor Laegeforen. 1983 Dec 10;103(34-36):2312–2316. [PubMed] [Google Scholar]
  19. Varouchakis G., Velonakis E. G., Amfilochiou S., Trichopoulos D. Asbestos in strange places: two case reports of mesothelioma among merchant seamen. Am J Ind Med. 1991;19(5):673–676. doi: 10.1002/ajim.4700190511. [DOI] [PubMed] [Google Scholar]

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