title: A new thin-type bronchoscope improves diagnostic accuracy of peripheral pulmonary carcinoma.
abstract: We investigated the XBF-4B40 (4B40) thin bronchoscope, which has a 4.0-mm outer diameter and a 2.0-mm biopsy channel, and studied its impact on the diagnosis of lung carcinoma. We analyzed 30 peripheral lung carcinoma cases by performing bronchoscopic examination using the 4B40 and the type 200 videoscope and recorded the most distal bronchus level reached. In addition, transbronchial aspiration biopsy, forceps biopsy, or brushing was performed, and the diagnosis accuracy between the two instruments was determined. The mean of the most distal bronchus reached by the 4B40 and the type 200 videoscope was the 4.5th and the 3rd, respectively. The 4B40 reached significantly further into the distal bronchus than the type 200 videoscope (p<0.0001). Accuracy for lesions detected in the right segment 1 or left segment 1+2 using the 4B40 and the type 200 videoscope was significantly different (p<0.0001) at 90.0 and 0%, respectively. The new type of bronchoscope, XBF-4B40, is useful for peripheral pulmonary lesion diagnosis with diagnosis accuracy improvements in the right segment 1 or the left segment 1+2.
authors.affiliation: Department of Thoracic Surgery, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Iyoda
authors.forename: Makoto
authors.initials: M
authors.lastname: Suzuki
authors.forename: Masako
authors.initials: M
authors.lastname: Chiyo
authors.forename: Yasumitsu
authors.initials: Y
authors.lastname: Moriya
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Yasufuku
authors.forename: Shigetoshi
authors.initials: S
authors.lastname: Yoshida
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Sekine
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Shibuya
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Iizasa
authors.forename: Yukio
authors.initials: Y
authors.lastname: Saitoh
authors.forename: Kenzo
authors.initials: K
authors.lastname: Hiroshima
authors.forename: Masayuki
authors.initials: M
authors.lastname: Baba
authors.forename: Takehiko
authors.initials: T
authors.lastname: Fujisawa
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis*; D000368:Aged; D000369:Aged, 80 and over; D001707:Biopsy, Needle / Q000379:methods; D020680:Bronchoscopes; D001999:Bronchoscopy / Q000379:methods*; D002283:Carcinoma, Bronchogenic / Q000175:diagnosis*; D018287:Carcinoma, Large Cell / Q000175:diagnosis*; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D012680:Sensitivity and Specificity