Localization of an Insulinoma by Endoscopic Ultrasound: A Case Report and Review of Diagnostic Modalities

Insulinomas are a type of pancreatic neuroendocrine tumor (pNET) that arises from pancreatic endocrine tissue. They are rare, with an estimated incidence of 4 cases per 1 million person-years7. While typically larger pNETs are detectable using conventional imaging studies such as transabdominal ultrasound, CT, or MRI, insulinomas are frequently missed by conventional imaging due to their relativel…