Predominant Pattern & or Distribution

Perilymphatic nodules; mid- and upper lung distribution

Additional Findings

Multiple nodules, differing sizes. Nodules cluster/coalesce. Nodules along fissures and pleural surface. Nodularity along central bronchovascular bundles.

Sarcoidosis, berylliosis, silicosis, coal-workers pneumoconiosis (and lymphangitic spread of carcinoma, however in this case, this one would be unlikely because of the distribution and lack of septal thickening in the lower lungs)

DDx

Etiology

Sarcoidosis.