Abstract
Endoscopic ultrasound (EUS) with fine needle aspiration (FNA) is the preferred diagnostic method for pancreatic, subepithelial, and other lesions in close proximity to the gastrointestinal tract. More recently EUS guided core biopsies of such lesions have been increasingly utilized in conjunction with FNA in the hope of increasing the diagnostic yield of the EUS-guided approach. It is not clear, however, if a core biopsy impacts the yield of the subsequent FNA. This study compares the diagnostic accuracy of FNA with a bedside cytopathologist with and without a preceding core biopsy.
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