• Jpn. J. Clin. Oncol. · Sep 2014

    Comparative Study

    Comparison of two 22 G aspiration needles for histologic sampling during endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA).

    • Takehiro Izumo, Shinji Sasada, Junko Watanabe, Christine Chavez, Yuji Matsumoto, and Takaaki Tsuchida.
    • Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, Tokyo, Japan drtake1118@gmail.com.
    • Jpn. J. Clin. Oncol. 2014 Sep 1;44(9):841-5.

    ObjectiveEndobronchial ultrasound-guided transbronchial needle aspiration is widely used for mediastinal and hilar lesions. Histologic specimens from this procedure are important for specific diagnosis and targeted therapy. Studies on the traditional endobronchial ultrasound-guided transbronchial needle aspiration needles reported yields of only 50-60% for diagnostic histologic specimens. Recently, a new needle has become available in Europe, USA and Asia. The investigators aimed to evaluate the histologic specimen retrieval yields of the two needles.MethodsPatients who underwent endobronchial ultrasound-guided transbronchial needle aspiration with the new 22 G needle (M group, n = 94) were compared with a historical control group who underwent endobronchial ultrasound-guided transbronchial needle aspiration with the traditional 22 G needle (O group, n = 82). The quality of needle aspirates from both groups was evaluated.ResultsThere were no significant differences between the two groups in terms of demographics, lesion characteristics, primary disease and examiner experience. The M group had a significantly shorter procedure time than the O group (P = 0.049). Of the 214 punctures by the M group, 159 (74.3%) were diagnostic, 28 (13.1%) were non-diagnostic and 27 (12.6%) had no histologic specimen. The 235 punctures by the O group were diagnostic in 144 (61.3%), non-diagnostic in 60 (25.5%) and had no histologic specimen in 31 (13.2%). The yield for diagnostic histologic specimens of the M group was significantly higher than the O group (P = 0.0035). There were no major complications observed.ConclusionsThe yield for diagnostic histologic specimens by the new 22 G endobronchial ultrasound-guided transbronchial needle aspiration needle was high. Further technical improvements of histologic sampling yields are very important when selecting targeted therapy.© The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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