The best approach for sampling of pancreatic neuroendocrine tumors – EUS-FNA or EUS-FNB?

The limitations of transabdominal ultrasound in diagnosis of pancreatic diseases [1] were the driving force in developing endosonography (EUS) with the first echoendoscope being launched in 1980 [2]. The curvilinear array design of modern echoendoscope transducer heads enables EUS-guided sampling of lesions [3]. Traditionally, the principal sampling technique has been EUS-guided fine-needle aspiration (EUS-FNA) with open-tip needles designed for...