Can the wet suction technique change the efficacy of endoscopic ultrasound-guided fine-needle aspiration for diagnosing autoimmune pancreatitis type 1? A prospective single-arm study

Figure 1 Target patients in this study and historical controls. The historical controls were 23 autoimmune pancreatitis patients who underwent endoscopic ultrasonography-guided fine-needle aspiration with no fewer than 4 punctures by 19 or 22 G needles. The target subjects in this study underwent endoscopic ultrasonography-guided fine-needle aspiration with a wet suction technique. The historical controls were considered the DRY group. AIP: Autoimmune pancreatitis; WEST: Wet suction technique.