Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is mildly enlarged , unchanged . Mediastinal contour is similar . Crowding of the bronchovascular structures is demonstrated with mild prominence of pulmonary vascular markings in the left lung , potentially suggestive of asymmetric mild pulmonary vascular congestion . Consolidative opacity in the left lung base is new in the interval . Patchy opacity in the right lung base is also noted . Small bilateral pleural effusions have developed . No pneumothorax is present . Cervical spinal fusion hardware is incompletely assessed . Mild to moderate multilevel degenerative changes are noted in the imaged thoracic spine . Elevation of the right hemidiaphragm is similar .
    OUTPUT:
    
1 . New consolidative opacity in the left lung base , potentially atelectasis though infection or aspiration remain in the differential . 2 . Small bilateral pleural effusions and right basilar atelectasis . 3 . Mild asymmetric pulmonary vascular congestion .