Preferred Label : atelectasis;
Definition : Pathophysiology.—Atelectasis is reduced inflation of all or part of the lung (20).
One of the commonest mechanisms is resorption of air distal to airway obstruction
(eg, an endobronchial neoplasm) (21). The synonym collapse is often used interchangeably
with atelectasis, particularly when it is severe or accompanied by obvious increase
in lung opacity. Radiographs and CT scans.—Reduced volume is seen, accompanied by
increased opacity (chest radiograph) or attenuation (CT scan) in the affected part
of the lung (Fig 8). Atelectasis is often associated with abnormal displacement of
fissures, bronchi, vessels, diaphragm, heart, or mediastinum (22). The distribution
can be lobar, segmental, or subsegmental. Atelectasis is often qualified by descriptors
such as linear, discoid, or platelike. (See also linear atelectasis, rounded atelectasis.)
[Fleischner Society];
Source : Fleischner Society;
Origin ID : RID28493;
UMLS CUI : C0004144;
Associated condition of
- Currated CISMeF NLP mapping
- See also inter- (CISMeF)
- Semantic type(s)
- UMLS correspondences (same concept)
Pathophysiology.—Atelectasis is reduced inflation of all or part of the lung (20).
One of the commonest mechanisms is resorption of air distal to airway obstruction
(eg, an endobronchial neoplasm) (21). The synonym collapse is often used interchangeably
with atelectasis, particularly when it is severe or accompanied by obvious increase
in lung opacity. Radiographs and CT scans.—Reduced volume is seen, accompanied by
increased opacity (chest radiograph) or attenuation (CT scan) in the affected part
of the lung (Fig 8). Atelectasis is often associated with abnormal displacement of
fissures, bronchi, vessels, diaphragm, heart, or mediastinum (22). The distribution
can be lobar, segmental, or subsegmental. Atelectasis is often qualified by descriptors
such as linear, discoid, or platelike. (See also linear atelectasis, rounded atelectasis.)
[Fleischner Society]
