Usefulness of cytological diagnosis in pancreatic endoscopic ultrasound-guided fine needle aspiration or biopsy: Comparison with histological diagnosis and relationship with puncture route and sample acquisition method.

Combining cytological diagnosis with histological diagnosis improved the diagnostic accuracy of EUS-FNA/FNB. Compared with histological diagnosis, cytological diagnosis showed stable diagnostic accuracy without being affected by differences in the puncture route or sample acquisition method.