Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a low inspiratory lung volumes . Allowing for changes due to this , the cardiomediastinal silhouette appears unchanged , with a top normal cardiac silhouette size . The bilateral hila are grossly unremarkable . There is no evidence of pulmonary vascular congestion . Minimal streaky opacity at the right lung base likely reflects subsegmental atelectasis in the setting of low lung volumes . Additionally , diffuse , subtle mild interstitial prominence likely relates to a combination of age - related changes and crowding of bronchovascular structures in the setting of a limited inspiratory effort . No focal lung consolidation , pleural effusion , or pneumothorax detected . Roughly circular calcifications of varying sizes overlying the left upper abdomen and a left lower lung are of uncertain etiology , but may relate to calcified cartilaginous rib ends .
    OUTPUT:
    
Low lung volumes . No acute pulmonary process detected .