Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are slightly increased lung markings , more so on the left than on the right , which may be related to pulmonary vascular congestion . No definite pleural effusion or evidence of pneumothorax . The cardiac and mediastinal silhouettes are grossly within normal limits . There is elevation of the right hemidiaphragm , which is relatively unchanged since the prior examination . There are deformities of left - sided ribs related to old , healed fractures . Degenerative changes of the acromioclavicular joints are mild .
    OUTPUT:
    
Mild prominence and crowding of vascular structures primarily on the left suggestive of pulmonary vascular congestion or mild edema . No clear consolidative process is present .