Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , accentuating the bronchovascular structures and limiting assessment of the cardiovascular status of the patient . Although mild pulmonary vascular congestion may be present , there are no areas of interstitial or alveolar opacities to suggest the presence of pulmonary edema . Subtle opacity in the right infrahilar region , partially obscuring the medial right hemidiaphragm , is new . There are no pleural effusions or pneumothoraces . Calcifications are present along both hemidiaphragms and appear to be intra-abdominal rather than pleural on prior CT abdomen of ___ .
    OUTPUT:
    
Low lung volumes . Focal opacity in right infrahilar region , which may reflect atelectasis , aspiration , or an early focus of infection . Followup radiographs may be helpful in this regard .