Insulinoma is a rare pancreatic neuroendocrine tumour (PNET) with an incidence rate of 4 per million population, and the most common cause of hypoglycaemia due to endogenous hyperinsulinism. We present the story of a 61-year-old male, who was extensively evaluated at many hospitals for his symptoms of giddiness, uneasiness and recurrent black outs for the last 3 months, his symptoms disappearing with a carbohydrate rich meal or sweets. Random sugar and fasting sugar values noted were low, with elevated insulin and C-peptide levels. Diagnosis of insulinoma was confirmed by a DOTA PET scan involving the tail of the pancreas and then surgically removed. Early detection is crucial for early surgery to allay symptoms. We describe our diagnostic and treatment plan with reference to previously published reports.
Keywords: DOTA PET scan; gastrinoma; insulinoma; multiple endocrine neoplasia; pancreatic neuroendocrine tumours.
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