Fig. 1From: Utility of a 21-gauge Menghini-type biopsy needle with the rolling method for an endoscopic ultrasound-guided histological diagnosis of autoimmune pancreatitis: a retrospective studyA 21-gauge Menghini-type needle. a Whole image of the 21-gauge endoscopic ultrasound-guided fine needle aspiration biopsy needle (EUS Sonopsy CY). b, c Image of the needle tip before (upper) and after (lower) aspiration using the piston, respectively. d After puncture with aspiration under 10Â mL of negative pressure, the handle of the needle was turned until the tip of the needle was confirmed to be rotated in the lesion. To reduce the contamination of blood, this procedure was repeated only three times, and the needle was removedBack to article page