Table 3.

Performance Characteristics of Endoscopic Ultrasound-Guided Fine Needle Aspiration for Differentiating Benign from Malignant (or Potentially Malignant) Lesions

EUS-FNA, endoscopic ultrasound-guided fine needle aspiration.

^a)One lesions sampled inadequately were regarded as true negative cases; ^b)Three lesions proved to be diagnostic errors were regarded as false negative cases: one lesion with cytology of spindle cell tumor proved to be adenocarcinoma of stomach, one lesion with cytology of several inflammatory cell proved to be myofibroblstic tumor of duodenum, one lesion with cytology of pancreatic ductal cell proved to be carcinoid tumor of duodenum.