Abstract
The number of patients with type 2 diabetes is rapidly increasing in Japan, as is the number of patients with cancer. We studied the association between type 2 diabetes and cancer in diabetic outpatients who visit for first examinations or come for regular examination. Of 639 diabetic patients, 24 were found to have cancer. We found that 54.2% of the cancer patients were first-visit patients, i.e., 5.4% of all first-visit patients. Of revisitors, 2.8% had cancer. All cancer occurrence was higher in diabetic patients than the age-matched general Japanese population. Diabetic patients should therefore be examined carefully for both diabetes-related vasculopathy and occult cancer.
