Prevalence of sub superior bronchus. A bronchoscopic study

Authors

  • Binay Thakur Dept. of Surgical oncology, thoracic surgery unit. B P Koirala Memorial Cancer Hospital, Bharatpur, Chitwan, Nepal
  • Sagar Khatiwada Dept. of Surgical oncology, thoracic surgery unit. B P Koirala Memorial Cancer Hospital, Bharatpur, Chitwan, Nepal
  • Manoj Tiwari Dept. of Surgical oncology, thoracic surgery unit. B P Koirala Memorial Cancer Hospital, Bharatpur, Chitwan, Nepal
  • Shachee Bhattarai Dept. of Surgical oncology, thoracic surgery unit. B P Koirala Memorial Cancer Hospital, Bharatpur, Chitwan, Nepal
  • Shrijana Thapa Dept. of Surgical oncology, thoracic surgery unit. B P Koirala Memorial Cancer Hospital, Bharatpur, Chitwan, Nepal
  • Ashish Kharel Dept. of Surgical oncology, thoracic surgery unit. B P Koirala Memorial Cancer Hospital, Bharatpur, Chitwan, Nepal
  • Mahesh Mani Adhikari Dept. of Surgical oncology, thoracic surgery unit. B P Koirala Memorial Cancer Hospital, Bharatpur, Chitwan, Nepal

DOI:

https://doi.org/10.3126/njc.v9i1.77089

Keywords:

segementectomy, tracheobronchial tree, bronchoscopy

Abstract

Background: The sub superior bronchus (B*) is an atypical/ accessory bronchus in lower lobe. With the global increase in indication of segmentectomy especially for lung cancer, it has received higher attention from thoracic surgeons. The aim of our study was to properly identify B* during bronchoscopy and elucidate its prevalence.

Methods: A thorough examination of bronchial tree was done during bronchoscopy in 60 patients. The indications were mostly for suspected malignancy. All the segmental bronchi (B1-10) were properly identified. Any accessory bronchus in lower lobar bronchus below B6 was labelled as B* and a video/ photo was captured for discussion among the investigators.

Results: B* was identified in 31.6% cases with an incidence of 21.6% in right side and 10% in left side. B6, (B7), B8, B9+10 configuration was found to be associated mostly with the presence of B* in right side (p=.005) whereas B* was exclusively associated with that configuration in left side (p<.001).

Conclusion: Proper identification of B* can be done by bronchoscopy and its prevalence (31.6%) is not uncommon.

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Published

2025-04-01

How to Cite

Thakur, B., Khatiwada, S., Tiwari, M., Bhattarai, S., Thapa, S., Kharel, A., & Adhikari, M. M. (2025). Prevalence of sub superior bronchus. A bronchoscopic study. Nepalese Journal of Cancer, 9(1), 36–40. https://doi.org/10.3126/njc.v9i1.77089

Issue

Vol. 9 No. 1 (2025)

Section

Original Articles

License

Copyright (c) 2025 Nepalese Journal of Cancer

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