Fig. 2From: Efficacy of EUS-guided FNB using a Franseen needle for tissue acquisition and microsatellite instability evaluation in unresectable pancreatic lesionsThe Franseen needle used for EUS-FNB (image provided by Boston Scientific Japan). The needle on the top is a conventional EUS-FNA needle. The cutting surface of the conventional FNA needle is in a lancet shape. The needle on the bottom is an FNB needle. The cutting surface is larger by adopting the Franseen designBack to article page