Sometimes the atrophy of the mucosa is so marked that it allows to explore bronchi of 4th and 5th order.
Bronchial Tree
060 – Left Basal Bronchial
Another variant very common in the lower left lobe, its division into two small trunks containing the three basal.
059 – Left Basal Bronchial
Accustomed distribution “in line” of the three left basal: anterior (LB8) here at 12 o’clock and partially hidden by the bronchial wall, medial (LB9) in the center and posterior segmental (LB10) below.
058 – Upper Lobular Bronchus Left
Close view at hour 3 of the entrance to the apical segment of the left upper lobe (LB6).
In its natural position, it is the first one that appears when leaving the upper left lobe bronchus.
057 – Lingular bronchus
A view of the lingular bronchus and its divisions in superior (LB4) at hour 11 and to its right the inferior (LB5).
056 – Medium Lobular Bronchus
From left to right: segmental medial (RB5) and lateral (RB4) of the middle lobe bronchus.
Division between the anterior segment (LB3) at hour 3 and the apicoposterior (LB1+2) at hours 8 and 10) of the left upper lobe.
055 – Upper Lobe Left
Entrance to the left upper lobe.
In the background on the right, the bronchus of the lingula and on its left, at 10 o’clock, the small bronchial passage culminate, until its division, which is not observed here, in anterior segmental (LB3) and apicoposterior (LB1+2).
054 – Crossroads or Left Secondary Carina
Image of the secondary carina that separates the upper and lower left lobular.
The area is also called a crossroads or “carrefour”.
053 – Left Source Bronchus
View of the left main bronchus, with its separation angle from the midline of about 70° and its normal length from 20 to 55 millimeters.
052 – Bronchial Tree
Cytological brush about to enter a segmental bronchus to obtain a cellular sample by abrasion, for study.