What is bibasal atelectasis?

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. Uncommonly it may be caused by bronchial obstruction from mucus or adjacent lymph nodes or other tissue. It depends on the degree of atelectasis but typically is benign.