Is occupationally induced exposure to radiation a risk factor for thyroid nodule formation ?
The prevalence of thyroid nodules was studied with ultrasonography in a group of male hospital workers (n=44) who had been exposed occupationally to x-rays.
This group was compared with a group of nonexposed workers (n=88) who were age-and sex-matched with the exposed workers.
Thyroid nodules were detected in 18 (41%) of the exposed workers, compared with 11 (13%) of the nonexposed controls.
Both groups were subdivided with respect to age (i.e., 30-39 y, 40-49 y, 50-59 y), and there was a higher and significant relative risk for thyroid nodule formation in the exposed group.
We also divided the groups into subgroups according to levels of exposure (i.e., nonexposed, exposed for<20 y, and exposed for>20 y), and a significant result was obtained with the linear-trend chi-square test.
The preliminary results of out study suggest that occupationally induced exposure to radiation may be a risk factor for thyroid nodule formation.
Mots-clés Pascal : Irradiation RX, Rayonnement ionisant, Toxicité, Nodule thyroïde, Exposition professionnelle, Homme, Personnel sanitaire, Hôpital, Médecine travail, Effet biologique, Endocrinopathie, Thyroïde pathologie
Mots-clés Pascal anglais : X ray irradiation, Ionizing radiation, Toxicity, Thyroid nodule, Occupational exposure, Human, Health staff, Hospital, Occupational medicine, Biological effect, Endocrinopathy, Thyroid diseases
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0397982
Code Inist : 002A08F02. Création : 10/04/1997.