Abstract
One hundred and twenty-six patients with definite or classical rheumatoid arthritis admitted to hospital between 1965 and 1974 for cytotoxic therapy were studied for the presence and type of malignant disease. Each of the cytotoxic treated patients was age and sex matched to a rheumatoid arthritis patient admitted to hospital during the same years but who did not receive cytotoxic therapy. There was no increase in malignancy in the cytotoxic treated group over the control group.