Pancreatic neuroendocrine neoplasm (pNEN) is a rare pancreatic tumor. Different pathological grades of pNEN are treated differently. Preoperative imaging examination plays a vital role in the diagnosis and grading of pNEN. With the development of ultrasound techniques
ultrasound plays an increasingly important role in the diagnosis and treatment of pNEN. This article reviewed the research progress of ultrasound imaging of pNEN.