Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Low lung volumes are again seen with crowding of the pulmonary bronchovascular markings with likely superimposed vascular congestion . There is no large effusion or confluent consolidation . Streaky bibasilar opacities suggestive of atelectasis , more so on the left , as noted on prior . Postoperative changes of aortic valve replacement seen with median sternotomy wires and prosthetic aortic valve . No acute osseous abnormality is detected .
    OUTPUT:
    
Pulmonary vascular congestion without definite superimposed acute consolidation or large effusion .