|Table of Contents|

Radial probe endobronchial ultrasound-guided bronchoscopy for peripheral pulmonary lesions

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《第三军医大学学报》[ISSN:1000-5404/CN:51-1095/R]

Issue:
2017年第17期
Page:
1756-1761
Research Field:
临床医学
Publishing date:

Info

Title:

Radial probe endobronchial ultrasound-guided bronchoscopy for peripheral pulmonary lesions

Author(s):

GONG Beilei LI Wei CHEN Yuqing GAO Hua CHEN Xueying LI Cuixia

Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui Province, 233004, China

Keywords:

bronchoscopy endobronchial ultrasonography peripheral pulmonary lesions diagnosis

PACS:
R445.1; R563.04; R768.1
DOI:
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Abstract:

Objective    To investigate the application of radial endobronchial ultrasound (R-EBUS)-guided bronchoscopy in the diagnosis of peripheral pulmonary lesions (PPLs), assess its safety and diagnostic value, and explore the influencing factors. Methods    Clinical data of 140 patients who underwent R-EBUS transbronchial biopsy (TBB) and brush biopsy in our department of respiratory endoscopy from January 2015 to March 2017 were collected and retrospectively analyzed in the study. Eightythree cases were diagnosed as PPLs. The detection rate, ability to locate the peripheral lesions, and influencing factors of EBUS were analyzed. The incidence rate of complications was observed to assess its safety. Results     Of the 83 PPLs patients, they were 55 males and 28 females, and at a mean age of 59.81±11.85 years. The total success rate of EBUS-guided bronchoscopic diagnosis was 59.04% (49/83), and the diagnostic rate was 50.94% (27/53) for malignant lesions, and 73.33% (22/30) for benign diseases. The rate of EBUS-TBB (5692%, 37/65) was significantly higher than that of brush biopsy (30.12%, 25/83, Chi square=10.76, P=0.001). EBUS-guided diagnostic methods had an accuracy of 60.00% (45/75), while the EBUS-guided bronchoscopy had a rate of 50.0% (4/8), but no significant difference was seen between the 2 methods (Chi square=0.03, P=0.87).The sizes of the lesions ranged from 10.0 to 52.4 mm, and the diagnostic yield for PPLs ≤20 mm in diameter (36.84%, 7/19) was lower than that for those >20 mm (65.62%, 42/64, Chi square=5.02, P=0.003). There was no significant difference (Chi square=10.05, P=0.07) in the diagnostic yield for different sites, with that of right upper lobe of 46.15% (12/26), right middle lobe 100.00%(8/8), right lower lobe 53.85%(7/13), left upper lobe 37.50%(3/8), left lingula lobe 63.64%(7/11), left lower lobe 70.59% (12/17). But the detection rate was obviously lower in the upper lobe (22/45, 48.89%) than the middle/lower lobe (27/38, 71.05%, Chi square=5.02, P=0.003). Of all the 83 patients, 74 ones (89.16%) were successfully identified using radial probe EBUS, but the lesions were not found in 9 patients. When the radial probe position was within the target lesion, the diagnostic yield was 81.58% (31/38), notably higher than that when the probe was positioned adjacent to the lesion (50.00%, 18/36, Chi square=8.24, P=0.004). Mild bleeding was observed when performing biopsy under bronchoscope, and no pneumothorax, or other serious complications were observed.  Conclusion     Radial EBUS is a safe and feasible method to accurately identify PPLs and improve its diagnostic rate. EBUSguided bronchoscopy has higher positive detection rate for PPLs, and is cost saving. The relationship of the probe and the site of lesion is the main factor influencing the diagnostic rate.

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Last Update: 2017-09-05