Discoid atelectasis refers to collapse of a small portion of lung and/or
fibrosisCystic fibrosis
Cystic fibrosis - resources
Neonatal cystic fibrosis screening of that piece of lung. It is
commonCommon cold and almost always of no clinical significance.
The "fibrotic stranding" may represent thickening of the
normalNormal saline flush septal lines. The septa are normal structures that compartmentalize lung lobes and lobules. The thickening can be caused by fluid or scarring. When these strands, or lines, follow a bronchus, they are thought to represent thickening of the bronchial wall. This thickening is most often associated with chronic bronchitis or asthma.
Many of these strands or lines simply reflect inflammation or scarring but are not at all related to a serious interstitial lung disease, called pulmonary fibrosis.
The strands are a common x-ray finding and not a sign of serious pulmonary disease. The same can be said of stable sub-pleural nodules.
An appropriate approach to these findings would be to repeat a chest x-ray in a year or so. If there is any suggestion of progression or worsening, your doctors might want to order a CT scan of the lungs.