Chronic apical pulmonary fibrosis with multifocal atelectasis -what does this finding mean and should it be treated?

Pulmonary fibrosis is scarring of the lung. Apical means the finding was at the top peak of the lung. Chronic indicates long-standing. Atlectasis means areas of the lung that are not inflating, and multifocal means that it's present in multiple areas. So, to sum up, there is lung standing lung scarring at the peak of the lung with multiple areas that aren't getting air. The finding can be caused by toxic exposures, connective tissue disease, or infectious disease, and any treatment will be based on the underlying cause. The phrase indicates a radiologic finding, not a diagnosis.