A computed tomography—negative pancreatic lesion diagnosed by endoscopic ultrasound imaging enhancement (with video)

Abstract

A 50-year-old woman was admitted for slightly elevated serum carbohydrate antigen 19-9 (39 U/mL) and negative findings from 2 rounds of computed tomography (CT) scanning at a 6-month interval (A). The patient underwent EUS examination. In the initial scanning, the pancreatic parenchyma was normal, without ductal dilatation. To avoid missing a potential isoechoic lesion, we next performed imaging enhancement by adjusting the acoustic parameters in the US (HI VISION Preirus, Hitachi, Tokyo, Japan).