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( Tadahisa Inoue ),( Fumihiro Okumura ),( Takashi Mizushima ),( Hirotada Nishie ),( Hiroyasu Iwasaki ),( Kaiki Anbe ),( Takanori Ozeki ),( Kenta Kachi ),( Shigeki Fukusada ),( Yuta Suzuki ),( Hitoshi 대한소화기기능성질환·운동학회 2016 Gut and Liver Vol.10 No.1
Background/Aims: A barbed puncture needle with a side hole was recently developed to improve sample quality and quantity in endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA). In this study, we retrospectively assessed the usefulness of this puncture needle. Methods: Factors affecting diagnostic yield, safety, and diagnostic accuracy were investigated in 76 patients who consecutively underwent EUS-FNA for neoplastic lesions at our hospital between January and December 2013. Results: The procedure was successful in all cases; the rates of sample collection and determination of the correct diagnosis were 92.1% and 89.5%, respectively. The mean number of needle passes required for diagnosis was 1.1. Complications included mild intraluminal bleeding in two patients (2.6%). Multivariate analysis revealed that lesion size (≤20 mm) was significantly associated with a decreased chance of determining the correct diagnosis. Conclusions: Core biopsy needles with a side hole are safe and provide a satisfactory diagnostic yield. However, the side hole may potentially reduce the rate of making the correct diagnosis in small lesions. (Gut Liver 2016;10:51-57)