Transient hypoglycemic abducens palsy.

Since 1928, among the thousands of patients treated for insulinoma, only 32 cases with peripheral neuropathy have been reported. None of these described an affection of the cranial nerves. We present a 56 old woman, who suffered from chronic hyperinsulinism due to an insulinoma. For ten years, the patient has developed progressively marked hypoglycemic attacks of up to 20 mg/dl. Recently we have observed the development of a paresis of the right abducens nerve lasting for 6 weeks.