Atelectasis (from greek: ἀτελής, incomplete + ἔκτασις, extension) is defined as the collapse or closure of the lung resulting in reduced or absent gas exchange. It may affect part or all of one lung. It is a condition where the alveoli are deflated, as distinct from pulmonary consolidation.
https://www.healthtap.com/topics/what-is-bibasal-atelectasis
Only the lung: Atelectasis refers to partial or complete collapse of a portion of the lung. It can be minor, affecting only a subsegment of one lobe of the lung, an entire lobe of the lung, or even the entire right or left lung. Minor atelectasis occurs if we don't take deep breaths often enough.
https://www.healthtap.com/topics/what-is-bibasal-atelectasis
1 Different types of pneumonia, an infection of your lungs, may temporarily cause atelectasis. 2  Pneumothorax. Air leaks into the space between your lungs and chest wall, indirectly causing some or all of a lung to collapse.  Scarring of lung tissue. Scarring could be caused by injury, lung disease or surgery.
http://www.mayoclinic.org/diseases-conditions/atelectasis/basics/causes/CON-20034847
Lung base atelectasi: Bibasilar atelectasis typically refers to linear (subsegmental) atelectasis at the lung bases. This is typically seen with inadequate inspiration at the time of radiologic studies. It may be a result of prior infection or surgery.
https://www.healthtap.com/topics/what-is-bibasal-atelectasis
1 Atelectasis is common in children who have inhaled an object, such as a peanut or small toy part, into their lungs.  Narrowing of major airways from disease. Chronic infections, including fungal infections, tuberculosis and other diseases, can scar and constrict major airways.
http://www.mayoclinic.org/diseases-conditions/atelectasis/basics/causes/CON-20034847
1 Scarring of lung tissue. Scarring could be caused by injury, lung disease or surgery. In these rare cases, the atelectasis is minor compared with the damage to the lung tissue from the scarring.  Tumor. A large tumor can press against and deflate the lung, as opposed to blocking the air passages.
http://www.mayoclinic.org/diseases-conditions/atelectasis/basics/causes/CON-20034847
1 Foreign body. Atelectasis is common in children who have inhaled an object, such as a peanut or small toy part, into their lungs.  Narrowing of major airways from disease. Chronic infections, including fungal infections, tuberculosis and other diseases, can scar and constrict major airways.
http://www.mayoclinic.org/diseases-conditions/atelectasis/basics/causes/CON-20034847
Ligula: The ligula is the equivalent of the middle lobe of the lung on the left-hand side. There is no true middle lobe but it is an area of the left lung. Atelectasis refers to an area of the lung where there is no good gas exchange due to either obstruction or filling in with fluid.
https://www.healthtap.com/topics/what-is-bibasal-atelectasis
1 Atelectasis is common in children who have inhaled an object, such as a peanut or small toy part, into their lungs. 2  Narrowing of major airways from disease. Chronic infections, including fungal infections, tuberculosis and other diseases, can scar and constrict major airways.  Tumor in a major airway.
http://www.mayoclinic.org/diseases-conditions/atelectasis/basics/causes/CON-20034847
Partial lung collapse. Atelectasis is caused by a blockage of the air passages (bronchus or bronchioles) or by pressure on the outside of the lung. It is common after surgery, or in patients who were in the hospital. Risk factors for developing atelectasis include: 1  Anesthesia.  Foreign object in the airway (most common in children)
http://www.nytimes.com/health/guides/disease/atelectasis/overview.html
what is atelectasis lung
Atelectasis lung is the collapse or closure of the lung resulting in reduced or absent gas exchange. Atelectasis is the collapse or closure of the lung resulting in reduced or absent gas exchange.