Diabetes in acromegaly--a study of 34 cases.

The incidence and severity of diabetes mellitus (DM) in 34 patients with acromegaly were studied. The incidence was higher (55.9%) than any other series reported. Nineteen had DM, of which 10 were symptomatic. Only one had diabetic retinopathy. Glucose tolerance was improved after successful treatment of acromegaly.