Abstract
Functioning islet-cell carcinoma is an uncommon cause of organic hyperinsulinism. The case reported presents several distinctive clinical features in addition to the interesting pathologic findings. Also noteworthy is the use of a relatively new method of serum assay of insulinlike activity.
Treatment of functioning islet-cell carcinoma involves control of hypoglycemia and palliation, both medical and surgical, directed toward the malignant tissue. Results in the case reported were typical of the general experience in this disease.