Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lordotic positioning . Lungs are overinflated , consistent with COPD . Cardiomediastinal silhouette is probably unchanged , allowing for differences in positioning Again seen is dense opacity in the lower third of left lung , consistent with left lower lobe collapse and / or consolidation , with suspected left pleural effusion . The left hemidiaphragm is obscured . On the right , there is minimal patchy opacity at the right base which is new , question atelectasis , no focus of aspiration or early pneumonic infiltrate can not be entirely excluded . Minimal blunting of the right costophrenic angle is again seen , possibly slightly more pronounced . Otherwise , the right lung is grossly clear . Again seen is hazy opacity in an incomplete azygos lobe in the right upper zone medially . This area was clear on the ___ CT scan and the apparent hazy density may be due to overlap of the right paratracheal soft tissues . There is upper zone redistribution mild vascular plethora , without other evidence of CHF .
    OUTPUT:
    
Cardiomegaly . Vascular plethora , which is possibly very slightly improved . Opacity at left base , consistent with collapse and consult and / or consolidation , probably with some degree of pleural fluid . Allowing for differences in positioning , this is overall similar . New patchy opacity at the right base could reflect atelectasis , but a focus of aspiration pneumonitis or early pneumonic infiltrate can not be excluded . Mild blunting of the right costophrenic angle again noted , possibly slightly larger , consistent with a small right pleural effusion . No pneumothorax detected .