Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New opacification on the left lower lung , without air bronchograms , consistent with atelectasis and / or effusion . The right lung is clear . No focal consolidation to suggest pneumonia . Bilateral pulmonary vascular engorgement without pulmonary edema . No pneumothorax . The heart is top - normal in size , unchanged . Stable mediastinal and hilar contours . The upper thoracic and lower cervical spine fixation devices appear intact and unchanged in position . The left PICC terminates in the region of the cavoatrial junction , as before .
    OUTPUT:
    
1 . Left lower lung atelectasis and / or effusion . 2 . Pulmonary vascular congestion without pulmonary edema .