Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . Streaky left lower lobe atelectasis is noted . A rounded density in the left hilar region may reflect partially calcified lymphadenopathy . No right hilar adenopathy is identified . The cardiac silhouette is within normal limits .
    OUTPUT:
    
Rounded left hilar density may reflect partially calcified lymphadenopathy in the setting of prior granulomatous disease exposure . No focal consolidation is identified . Findings could be further assessed on CT .