Insulinoma Presenting with Neuropsychiatric Symptoms

An insulinoma is a rare pancreatic endocrine tumor which is typically a hypervascular, solitary small tumour. 90 % of tumors are benign and less than 2 cm in size. Some insulinomas are associated with MEN-1 syndrome. Some cases of insulinoma may present with neuropsychiatric symptoms and may be wrongly diagnosed as psychosis. We report a case of insulinoma in a 55 years old female who presented with episodes of abnormal behavior and altered sensorium. On detailed investigations she was diagnosed as a case of hyperinsulinemic hypoglycemia due to insulinoma (in her case MRI abdomen was normal) DOTANOC PET CT confirmed the insulinoma in body/tail of pancreas.