Diagnostic value and influencing factors of endoscopic ultrasound-guided fine needle aspiration for space-occupying lesions of gastrointestinal adjacent tissue

Objective To investigate the diagnostic value of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) on malignant lesions in gastrointestinal adjacent tissue, and further to analyze the risk factors influencing positive rate of EUS-FNA. Methods The clinical data of 171 patients undergoing EUS-FNA from January 2009 to May 2016 were collected. The lesion location, size and characteristics, the number of needle passes, puncture...