Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright view of the chest provided . Lung volumes are low . There is diffuse hazy opacity in the left lower lobe and lingula , silhouetting the left heart border and left diaphragm . There is mild hazy opacity in the right middle lobe , silhouetting the right heart border and medial portion of the right hemidiaphragm . There is no pneumothorax . The cardiomediastinal silhouette is normal where seen . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Diffuse opacity in the left lower lobe and lingula , as well as opacity in the right middle lobe , likely represent pneumonia or aspiration .