Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low limiting assessment . Subtle increased opacity abuts the left heart border which likely reflects crowding of bronchovascular markings in the setting of low lung volumes though an early pneumonia is difficult to exclude . Right lung is clear . No large effusion or pneumothorax . No signs of congestion or edema . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Subtle opacity abutting the left heart border which could represent a very early pneumonia in the correct clinical setting . Please note , low lung volumes limits assessment .