Diagnosis of autoimmune pancreatitis by EUS-FNA by using a 22-gauge needle based on the International Consensus Diagnostic Criteria

Background It is controversial whether EUS-guided FNA by using 22-gauge (G) needles is useful for the diagnosis or evaluation of autoimmune pancreatitis (AIP). Objective To evaluate the usefulness of EUS-FNA by 22-G needles for the histopathological diagnosis of AIP. Design A retrospective study. Setting Single academic center. Patients A total of 273 patients, including 25 with AIP, underwent EUS-FNA and histological examinations. Results...