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Diagnostic yield of post-bronchoscopy sputum for diagnosing pauci-bacillary pulmonary tuberculosisopen access

Authors
Park, Joung HaJo, Kyung-WookShim, Tae SunKim, Sung-Han
Issue Date
May-2021
Publisher
TAYLOR & FRANCIS LTD
Keywords
Post-bronchoscopy sputum; pulmonary tuberculosis; pauci-bacillary
Citation
ANNALS OF MEDICINE, v.53, no.1, pp 576 - 580
Pages
5
Journal Title
ANNALS OF MEDICINE
Volume
53
Number
1
Start Page
576
End Page
580
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/62611
DOI
10.1080/07853890.2021.1908587
ISSN
0785-3890
1651-2219
Abstract
Background A few studies have mentioned that post-bronchoscopy sputum (PBS) could improve the diagnostic yield in pauci-bacillary pulmonary tuberculosis (PTB). Therefore, we evaluated the diagnostic yield of PBS for diagnosing pauci-bacillaryPTB. Methods Clinical data of immunocompromised adult patients with pauci-bacillary PTB were retrospectively retrieved at a tertiary hospital in Seoul, South Korea over a 5-year period. We analyzed patients who underwent bronchoscopy examinations for diagnosing pauci-bacillary PTB. Results Ninety patients were finally analyzed. Of these patients, 76 patients were tested with PBS. Six (8%) of these patients had positive results on AFB smear of PBS alone. Additionally, 52 patients (68%) had positive results on mycobacterial culture and 12 (16%) had positive results on mycobacterial culture of PBS exclusively. Therefore, in this study population, a total of 18 patients (20%) were finally diagnosed as having PTB with PBS results only, even though AFB smear microscopy and culture of other specimens had negative results. Conclusions PBS could improve the diagnostic yield by 20% when diagnosing pauci-bacillary PTB. In addition, about 8% of the patients could be diagnosed rapidly because of AFB smear microscopy positivity for PBS. Therefore, PBS use should be considered as a complementary diagnostic approach in patients with suspected pauci-bacillary PTB.
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Park, Joung Ha
의과대학 (의학부(임상-광명))
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