Cohort study comparing the diagnostic yields of 2 different EUS fine-needle biopsy needles

Two second-generation, flexible EUS fine-needle biopsy (FNB) needles have recently been marketed in the United States. Thus far, there have been no comparative studies of the diagnostic yield of these needles. The aim of this study was to compare the diagnostic yield achieved with FNB using one needle during one time period and the other needle during a second time period.

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