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lung segments
2 cases
No description provided
Article
Bronchopulmonary segmental anatomy
Bronchopulmonary segmental anatomy describes the division of the lungs into segments based on the tertiary or segmental bronchi.
Gross anatomy
The trachea divides at the carina forming the left and right main stem bronchi which enter the lung substance to divide further. This initial division ...
Article
Bronchopulmonary segments (mnemonic)
Mnemonics to remember the bronchopulmonary segments are:
A PALM Seed Makes Another Little Palm (right lung)
ASIA ALPS (left lung)
Mnemonics
'A PALM Seed Makes Another Little Palm'
right upper lobe
A: apical segment
P: posterior segment
A: anterior segment
middle lobe
L: lateral segment...
Playlist
Segmental lung anatomy
1 case
No description provided
Playlist
Anatomy of lung segments
2 cases
No description provided
Article
Segmental atelectasis
Segmental atelectasis (plural: atelectases) refers to collapse of one or several segments of a lung lobe. It is a morphological subtype of lung atelectasis. It is better appreciated on CT and Its radiographic appearance can range from being a thin linear to a wedge-shaped opacity that does not a...
Playlist
Ct lung segments annotated
2 cases
No description provided
Case
Small cell lung cancer with segmental collapse and probable lymphangitis carcinomatosis
Published
17 Sep 2014
90% complete
CT
Case
Lung cancer - left lower lobe segmental collapse
Published
12 Oct 2023
77% complete
X-ray
CT
Question
Question 1247
Which lung segment is this?
Article
Pulmonary sequestration
Pulmonary sequestration, also called accessory lung, refers to the aberrant formation of segmental lung tissue that has no connection with the bronchial tree or pulmonary arteries. It is a bronchopulmonary foregut malformation (BPFM).
There are two types:
intralobar sequestration (ILS)
extral...
Article
Resorptive (obstructive) atelectasis
Resorptive or obstructive atelectasis is a form of lung collapse that is due to obstruction of the airways supplying a lung segment or lobe. It is a term used to distinguish atelectasis identified on imaging based on the underlying pathophysiology to guide diagnosis.
Clinical presentation
The ...
Article
Tracheal bronchus
A tracheal bronchus (with some variations also known as a pig bronchus) is an anatomical variant where an accessory bronchus originates directly from the supracarinal trachea.
Terminology
The term (pig bronchus or bronchus suis) is often given when the entire upper lobe (usually right side) i...
Article
Congenital pulmonary airway malformation
Congenital pulmonary airway malformations (CPAM) are multicystic masses of segmental lung tissue with abnormal bronchial proliferation. CPAMs are considered part of the spectrum of bronchopulmonary foregut malformations.
Terminology
CPAMs were previously termed congenital cystic adenomatoid ma...
Article
Boyden classification of bronchi
The Boyden classification of bronchi refers to the standard nomenclature used to describe bronchopulmonary segmental anatomy.
Each lung has 10 segments, however, on the left, the first two segments share a common trunk and are hence B1/2. Also given the shared trunk on the left of the lower lob...
Article
Tracheobronchial tree
The tracheobronchial tree is the branching tree of airways beginning at the larynx and extending inferiorly and peripherally into the lungs as bronchioles. The luminal diameter decreases as the branching increases more peripherally into the lungs. The airway walls down to the level of the bronch...
Article
Silhouette sign (x-rays)
Silhouette sign is somewhat of a misnomer and in the true sense actually denotes the loss of a silhouette, thus, it is sometimes also known as loss of silhouette sign or loss of outline sign 4.
The differential attenuation of x-ray photons by two adjacent structures defines the silhouette, e.g...
Article
Endobronchial valve
Endobronchial valves are one-way valves inserted via bronchoscopy that restrict airflow to a particular lung segment. They permit the drainage of airway secretions during the expiratory phase but restrict incoming airflow during inspiration 1.
Endobronchial valves were originally designed as an...
Article
Scimitar syndrome
Scimitar syndrome, also known as hypogenetic lung syndrome, is characterised by a hypoplastic lung that is drained by an anomalous pulmonary vein into the systemic venous system. It is a type of partial anomalous pulmonary venous return and is one of the several findings in congenital pulmonary ...
Article
Lung atelectasis
Lung atelectasis (plural: atelectases) refers to lung collapse, which can be minor or profound and can be focal, lobar or multilobar depending on the cause.
Terminology
According to the fourth Fleischner glossary of terms, atelectasis is synonymous with collapse 13.
Pathology
Atelectasis is ...
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