© 1983 Oxford University Press
research-article |
Does the use of stained maggots present a risk of bladder cancer to coarse fishermen?
1Yorkshire Regional Cancer Organisation, Cookridge Hospital Leeds 16, UK
2Pontefract General Infirmary Southgate, Pontefract, UK
3Huddersfield Royal Infirmary Huddersfield, UK
4Bradford Royal Infirmary Bradford, UK
5Cookridge Hospital Leeds 16, UK
6Department of Community Medicine and General Practice, University of Leeds Hyde Terrace, Leeds 2, UK
A case-control study in West Yorkshire has been used to investigate possible risks of bladder cancer amongst those fishermen who used azo-based dyestuffs to stain maggots or who purchased ready coloured maggots. No risks have been found, although the confidence limits of the estimates are wide. These data refer to exposures over ten years ago and it is possible recent changes in fishing practice, if they have occurred, are not yet assessable due to the long mean latency seen in bladder cancer when exposure to carcinogens is not great. This paper does not suggest the general use of these substances is without hazard, merely that no risk is associated with the study group and that the chemicals under study are not a major cause of bladder cancer.