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Ever since the first endoscopic ultrasound-guided fine needle aspiration (FNA) was done in 1992, the procedure has evolved to become an indispensable tool for tissue acquisition in patients with gastrointestinal tumors and periluminal lesions. With the growing evidence of neoadjuvant therapy and research into intratumoral therapy, the need to obtain tissue diagnosis for tumors is quite apparent. This review provides an overall perspective to the endosonographer on various issues that are a key for best practices in FNA, in addition to being an update for practicing experienced endosonographers

Endoscopic ultrasound.guided fine-needle tissue acquisition – A review and update of literature