Use of cellular or cordless telephones and the risk for non-Hodgkin's lymphoma.
OBJECTIVE
To evaluate the use of cellular and cordless telephones as the risk factor for non-Hodgkin's lymphoma (NHL).


METHODS
Male and female subjects aged 18-74 years living in Sweden were included during a period from 1 December 1999 to 30 April 2002. Controls were selected from the national population registry. Exposure to different agents was assessed by questionnaire.


RESULTS
In total, 910 (91%) cases and 1016 (92%) controls participated. NHL of the B-cell type was not associated with the use of cellular or cordless telephones. Regarding T-cell NHL and >5 year latency period, the use of analogue cellular phones yielded: odds ratio (OR) = 1.46, 95%; confidence interval (CI) = 0.58-3.70, digital: OR=1.92, 95%; CI=0.77-4.80 and cordless phones: OR=2.47; CI=1.09-5.60. The corresponding results for certain, e.g. cutaneous and leukaemia, T-cell lymphoma for analogue phones were: OR=3.41, 95%; CI=0.78-15.0, digital: OR=6.12, 95%; CI=1.26-29.7 and cordless phones: OR=5.48, 95%; CI=1.26-23.9.


CONCLUSIONS
The results indicate an association between T-cell NHL and the use of cellular and cordless telephones, however based on low numbers and must be interpreted with caution. Regarding B-cell NHL no association was found.
Department of Oncology, University Hospital, 701 85, Orebro, Sweden. lennart.hardell@orebroll.se
Lennart
L
Hardell
Mikael
M
Eriksson
Michael
M
Carlberg
Christer
C
Sundström
Kjell Hansson
KH
Mild
D000293:Adolescent; D000328:Adult; D000368:Aged; D040421:Cell Phone / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000453:epidemiology / Q000209:etiology*; D008297:Male; D008872:Microwaves / Q000009:adverse effects; D008875:Middle Aged; D012307:Risk Factors