Abstract
We present the case of a 14-year-old female who experienced several episodes of reversible altered mental status triggered by hypoglycemia. Following endocrine investigation, she was diagnosed with insulinoma. Insulinoma, a rare, differentiated, and functioning neuroendocrine tumor of the pancreas overproduces insulin, thus leading to hypoglycemic episodes. Conventional imaging failed to detect the lesion; therefore, arterial calcium stimulation with venous sampling (ASVS) was used for preoperative localization. The patient recovered without complications after surgical enucleation of the tumor. The ASVS is a useful method for localizing insulinomas when conventional imaging techniques fail, and can help reduce morbidities associated with surgical excision.
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