Insulinoma: A Rare Cause of a Common Metabolic Disorder - Hypoglycaemia

We describe the first patient diagnosed with an insulinoma in Oman and successfully managed with a distal laparoscopicpancreatectomy. The importance of obtaining a good history from the patient and/or his family is stressed. All patients with loss ofconsciousness must have a Reflow check carried out and, if hypoglycaemic, this should be documented in the laboratory and a simultaneousserum sample stored for measurement of insulin, C-peptide proinsulin and sulphonylurea levels, if subsequently indicated.If magnetic resonance imaging fails to locate the tumour, endoscopic ultrasound of the pancreas, or indium 111 labelled octreotidescanning is indicated if the patient¡¦s hypoglycaemia has previously responded to treatment with octreotide.