According to the article: "title 'the diagnostic and cellularity yield of reverse bevel versus forktip fine needle biopsy - abdelfatah et al 2018.Consecutive patients with upper gastrointestinal lesions undergoing eus-fnb (endoscopic ultrasound fine needle biopsy) using 22 gauge procoretm (reverse bevel) or sharkcoretm (fork-tip) needles were included in the study.Eus-fnb was performed on all solid lesions (masses and lymph nodes) using the reverse bevel needle in consecutive patients.The study included 301 patients with a mean age of 67.2612.6.Of the total population, 157 patients were female, and 144 were males.Out of the 301 patients, 139 patients were in the reverse bevel needle group and 162 in the fork-tip needle group.One patient in the reverse bevel needle group developed severe bleeding requiring a blood transfusion.
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