Atypical bronchus in the right lower lobe: Computed tomography-based analysis.
Clin Anat
; 33(8): 1187-1196, 2020 Nov.
Article
em En
| MEDLINE
| ID: mdl-31943352
ABSTRACT
INTRODUCTION:
The aim of this study was to define the subsuperior bronchus (B*) and reestablish the bronchial anatomy of the right lower lobe (RLL) by assessment of atypical bronchi. MATERIALS ANDMETHODS:
Chest computed tomography (CT) scans of 500 consecutive patients were retrospectively evaluated. All CT scans were acquired with 64-slice scanners. Atypical bronchi in the RLL were classified on the basis of running direction and shape lateral (Lat), posterolateral (PL), posterior (Post), Lat + PL, and PL + Post. We classified an atypical bronchus in the basal segmental bronchus (BSB) stem running posteriorly or posterolaterally as B* and a para-lateral bronchus running laterally as Para-B8. The B* posts running posteriorly were named P1, and those running medially P2.RESULTS:
Atypical BSB bronchi Lat, PL, and Post arose from B8, B9, and B10, respectively. All Lat + PL bronchi arose from B8 or B9, and all PL + Post from B9 or B10. When an atypical bronchus arose from one of the BSB pair, none arose from the other. Atypical bronchi forming B* and Para-B8 arose from the stem spreading the connatural BSBs. The P2 post coexisted with another atypical stem bronchus originating from B8, 9, 10, or higher.CONCLUSIONS:
The first subsegmental bronchi of B8, B9, and B10 are Lat, PL, and Post, respectively. Lat + PL and PL + Post bronchi at the BSB level could result from fusion of an atypical bronchus during downward migration. The stem B* and Para-B8 could result from arrested downward migration of atypical bronchi. This information is useful for RLL segmentectomy.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Brônquios
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Variação Anatômica
Tipo de estudo:
Observational_studies
Limite:
Adolescent
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Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article