Hairy cell leukaemia (HCL) is a rare non-Hodgkin lymphoma of unknown a
etiology most frequently diagnosed in males. In earlier epidemiologica
l studies of HCL, exposures to benzene and chemicals appear to be risk
factors. Since 1984, 48 patients (36 men and 12 women) with HCL has b
een treated in Uppsala. Information on occupation was collected from t
he medical records. 29 percent (13 men and one woman) worked in farmin
g. One additional man worked in gardening. Of the men, 39 percent had
this kind of work giving an OR of 7.5 (CI. 4.2-13.2) compared with the
general Swedish population in 1970. A larger case control study is no
w being conducted.