2024-03-28T20:48:20Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/682482022-11-17T02:08:08Zhdl_2115_20043hdl_2115_137Usefulness of Endobronchial Ultrasonography With a Guide Sheath and Virtual Bronchoscopic Navigation for Ground-Glass Opacity LesionsUsefulness of EBUS-GS and Virtual Bronchoscopic Navigation for Ground-Glass Opacity LesionsEBUS-GS and VBN for GGO lesionsIkezawa, YasuyukiShinagawa, NaofumiSukoh, NoriakiMorimoto, MegumiKikuchi, HajimeWatanabe, MasahiroNakano, KosukeOizumi, SatoshiNishimura, Masaharubronchial endoscopy, ultrasound, EBUSultrasoundLung cancer, diagnosis490Background: Endobronchial ultrasonography with guide sheath (EBUS-GS) could be useful for diagnosing ground-glass opacity (GGO) predominant-type lesions in the peripheral lung. Furthermore, several studies have reported that transbronchial biopsy using EBUS-GS and virtual bronchoscopic navigation (VBN) was safe and effective for diagnosing small peripheral lung lesions. Our objectives were to diagnose solitary peripheral GGO predominant-type lesions by transbronchial biopsy using EBUS-GS and VBN under radiographic fluoroscopic guidance, and to evaluate the clinical factors associated with diagnostic yield. Methods: The medical records of 169 patients with GGO predominant-type lesions who underwent transbronchial biopsy using EBUS-GS and VBN under radiographic fluoroscopic guidance were retrospectively reviewed. Results: Endobronchial ultrasonography images could be obtained for 156 (92%) of 169 GGO predominant-type lesions, and 116 (69%) were successfully diagnosed by this method (20 of 31 pure GGO lesions [65%]; 96 of 138 mixed GGO predominant-type lesions [70%]). The mean size of diagnosed lesions was significantly larger than that of nondiagnosed lesions (22 mm versus 18 mm, p < 0.01). Regarding diagnostic yield based on computed tomography sign, cases with presence of a bronchus leading directly to a lesion had significantly higher diagnostic yield than the other lesions (p < 0.01). Conclusions: The addition of VBN to EBUS-GS could be useful in clinical practice for diagnosing GGO predominant-type lesions in the peripheral lung.ElsevierJournal Articleapplication/pdfhttp://hdl.handle.net/2115/68248https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/68248/1/ATS103_470.pdf0003-4975The Annals of Thoracic Surgery10324704752017-02enginfo:pmid/27825686info:doi/10.1016/j.athoracsur.2016.09.001© 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/author