Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mediastinal shift towards the left in a slightly rotated film with a veil - like opacity in the left upper hemithorax , with gradual increase in opacity inferiorly and is obscuring the left hilus and superior aspect of the aortic arch , which is suggestive of left upper lobe collapse . Increased homogeneous opacification of the left lower lobe with silhouting of the left hemidiaphram . Right lung is clear with little if any pleural fluid in the right lower lobe . No pneumothorax or bony abnormality .
    OUTPUT:
    
Left upper lobe collapse with large left basal consolidation , and pleural effusion . Results were conveyed via telephone to Dr . ___ by Dr . ___ on ___ at 4 :00 p .m . within 20 minutes of the results .