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Cancer incidence among Finnish seafarers, 1967–92

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A cohort of 30,940 male and 11,529 female seafarers registered in the files of Seafarers' Pension Fund in Finland was followed up through the Finnish Cancer Registry for cancer in 1967–92. Among male seafarers, there were 1,199 cases of cancer, which corresponds to the average cancer incidence in Finnish men. There was a statistically significant excess of non-melanoma skin cancer (standardized incidence ratio [SIR]=1.8, 95 percent confidence interval [CI]=1.2–2.5) and mesothelioma (SIR=2.9, CI=1.2–5.6) in the follow-up category of 20 or more years since the first employment. Alcohol-related cancers were increased among seafarers (SIR for cancer of the mouth and pharynx = 1.; esophagus = 1.4; and liver = 1.5; combined CI=1.1–1.9). Deck crews had a significantly high risk of cancer of the pancreas (SIR=2.0) and also prostate after 10 years since first employment (SIR=1.6). Occupational asbestos exposure among seafarers is likely strong enough to cause excess cases of mesothelioma but not of lung cancer. Occupational exposures also may be associated with increased risk of cancers of the kidney, pancreas, prostate and old-age brain cancer in some of the main occupational categories. Cumulative ultraviolet radiation likely doubles the risk of nonmelanoma skin cancer among older men and repeated sunburns that of skin melanoma in ages below 30 (SIR among deck and engine crew = 4.6, CI=3.1–6.5). Female ship personnel had a significantly elevated total cancer risk (observed number of cases = 732) which increased over follow-up time (SIR in the category ≥ 20 years since the first employment was 1.3, CI=1.1–1.5). This excess was attributable primarily to lung cancer (SIR=2.6, CI=2.0–3.3). Also cancers of the cervix uteri, vulva, and vagina showed significant excess after 10 to 20 years since first employment aboard.

Address correspondence to Dr Pukkala, Finnish Cancer Registry, Litsankatu 21 B, FIN-00170 Helsinki, Finland. The Finnish Work Environment Fund financially supported this project.

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References

  1. Rafnsson V, Johannesdottir SG, Oddsson H, Benediktsson H, Tulinius H, Magnusson G. Mortality and cancer incidence among marine engineers and machinists in Iceland. Scand J Work Environ Health 1988; 14: 197–200.

    Google Scholar 

  2. Moen BE, Riise T, Helseth A. Cancer among captains and mates on Norwegian tankers. APMIS 1990; 98: 185–90.

    Google Scholar 

  3. Brandt LPA, Kirk NU, Jensen OC, Hansen HL. Mortality among Danish merchant seamen from 1970 to 1985. Am J Ind Med 1994; 25: 867–76.

    Google Scholar 

  4. Olsen JH, Jensen OM. Occupation and risk of cancer in Denmark. An analysis of 93,810 cancer cases, 1970–1979. Scand J Work Environ Health 1987; 13: Suppl 1: 1–91.

    Google Scholar 

  5. Van Den Eeden SK, Weiss NS, Strader CH, Daling JR. Occupation and the occurrence of testicular cancer. Am J Ind Med 1991; 19: 327–37.

    Google Scholar 

  6. Nilsson R, Hörte L-G. Cancer in seamen. Antwerpen, Belgium: The 2nd International Symposium on Maritime Health 1993, Abstracts: 65.

  7. Tenfjord OW, Borchgrenvink CF, Vaa T, Vellar OD, Aarö LE. Prevalence of risk-factors for coronary heart disease (CHD) among Norwegian seamen (in Norwegian, with an English summary). Tidsskr Nor Laegeforen 1983; 103: 2312–6, 2348.

    Google Scholar 

  8. Saarni H, Niemi N, Saarni H, Niemi L. Luotsien työolot, terveydentila ja viihtyisyys. Osa 1: kyselytutkimus [Work and health of Finnish sea pilots. Part 1. A questionnaire study (in Finnish)]. Report serie 4. Turku, Finland: Regional Institute of Occupational Health, 1989: 1–72.

    Google Scholar 

  9. Sigurjonsson J. Occupational variations in mortality from gastric cancer in relation to dietary differences. Br J Cancer 1967; 21: 651–6.

    Google Scholar 

  10. Salaspuro A. Alkoholiin liitynyt terveyspalvelujen käyttö Suomessa vuonna 1972 [Alcohol-related utilization of health services in Finland 1972 (in Finnish)]. Helsinki, Finland: Alcohol Research Institute, 1978; Publication 29: 91–4.

    Google Scholar 

  11. Magnani C, Coggon D, Osmond C, Acheson ED. Occupation and five cancers. A case-control study using death certificates. Br J Ind Med 1987; 44: 769–76.

    Google Scholar 

  12. Levin LI, Silverman DT, Hartge P, Fears TR, Hoover RN. Smoking patterns by occupation and duration of employment. Am J Ind Med 1990; 17: 711–25.

    Google Scholar 

  13. Blair A, Hoar SK, Walrath J. Comparison of crude and smoking-adjusted standardized mortality ratios. J Occup Med 1985; 27: 881–4.

    Google Scholar 

  14. Baksaas I, Lund E, Skjerven JE, Langård S, Vellar OD, Aarö LE. Cancer among merchant seamen. A cohort study (in Norwegian, with an English summary). Tidsskr Nor Laegeforen 1983; 103: 2317–20.

    Google Scholar 

  15. Greenberg M. Cancer mortality in merchant seamen. Ann N Y Acad Sci 1991; 643: 321–32.

    Google Scholar 

  16. Selikoff IJ, Lilis R, Levin G. Asbestotic radiological abnormalities among United States merchant marine seamen. Br J Ind Med 1990; 47: 292–7.

    Google Scholar 

  17. Varouchakis G, Velonakis EG, Amfliochiou S, Trichopoulos D. Asbestos in strange places: Two case reports of mesothelioma among merchant seamen. Am J Ind Med 1991; 19: 673–6.

    Google Scholar 

  18. Rafnsson V, Gunnarsdottir H. Cancer incidence among seamen in Iceland. Am J Ind Med 1995; 27: 187–93.

    Google Scholar 

  19. Dolin PJ, Cook-Mozaffari P. Occupation and bladder cancer: A death-certificate study. Br J Cancer 1992; 66: 568–78.

    Google Scholar 

  20. Nilsson RI, Carneskog J, Järvholm BG, Nordlinger RG. Acute nonlymphatic leukemia among deck officers on coastal tankers: A report of two cases. Am J Ind Med 1988; 14: 657–9.

    Google Scholar 

  21. Ivergård T, Ekelin A, Lundberg M, Norberg L, Sveding I. Arbetsmiljö inom sjöfarten, en kartläggning [Working conditions on board ship, a survey report (in Swedish)]. Stockholm, Sweden: Sjöfartens arbetarskyddsnämnd, 1978.

    Google Scholar 

  22. Moen BE, Hollund BE, Berntsen M, Flo R, Kyvik KR, Riise T. Chemical exposure of deck crew on product tankers loading the cargo with the hatches open. Bull Inst Mar Trop Med Gdynia 1993/1994; 44/45: 65–73.

    Google Scholar 

  23. MacFarland HN, Ulrich CE, Holdsworth CE, Kitchen DN, Halliwell WH, Blum SC. A chronic inhalation study with unleaded gasoline vapor. J Am Coll Toxicol 1984; 3: 231–47.

    Google Scholar 

  24. Partanen T, Heikkilä P, Hernberg S, Kauppinen T, Moneta G, Ojajärvi A. Renal cell cancer and occupational exposure to chemical agents. Scand J Work Environ Health 1991; 17: 231–9.

    Google Scholar 

  25. Teppo L, Pukkala E, Lehtonen M. Data quality and quality control of a population-based cancer registry. Experience in Finland. Acta Oncol 1994; 33: 365–9.

    Google Scholar 

  26. Pukkala E. Use of record linkage in small-area studies. In: Elliot P, Guzick J, English D, Stern R, eds. Geographical and Environmental Epidemiology. Oxford, UK: Oxford University Press, 1992: 125–31.

    Google Scholar 

  27. Central Statistical Office of Finland. Population Census 1970: Occupation and social position. Official Statistics of Finland VI C:104, Vol. IX, 1974.

  28. Pukkala E. Cancer risk by social class and occupation. A survey of 109,000 cancer cases among Finns of working age. In: Contributions to Epidemiology and Biostatistics, Vol 7. Basel, Switzerland: Karger, 1995.

    Google Scholar 

  29. Peto J. Dose-response and mortality. Dose response relationship for asbestos related disease: implications for hygienic standards. Ann NY Acad Sci 1979; 330: 195–203.

    Google Scholar 

  30. Nokso-Koivisto P, Pukkala E. Past exposure to asbestos and combustion products and incidence of cancer among Finnish locomotive drivers. Occup Environ Med 1994; 51: 330–4.

    Google Scholar 

  31. Minni H, Nikkilä A, Hakala E. Polycyclic aromatic hydrocarbons in ships. Proceedings, 36. Nordiska Arbetsmiljömötet. Reykjavik, Iceland: Arbetarskyddsstyrelsen 1987: 135–6.

    Google Scholar 

  32. Higginson J, Muir CS, Muñoz N. Human Cancer: Epidemiology and Environmental Causes. Cambridge, UK: Cambridge University Press, 1992: 315–9, 407–14.

    Google Scholar 

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Dr Pukkala is with the Finnish Cancer Registry, Helsinki, Finland. Dr Saarni is with the Regional Institute of Occupational Health, Turku, Finland.

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Pukkala, E., Saarni, H. Cancer incidence among Finnish seafarers, 1967–92. Cancer Causes Control 7, 231–239 (1996). https://doi.org/10.1007/BF00051299

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