Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 10 :33 is submitted .
    OUTPUT:
    
There is a persistent large right pleural effusion with consolidation at the right lung base which could reflect lobar atelectasis , although pneumonia or even a mass can not be excluded . The left lung remains clear . No pulmonary edema . No pneumothorax . Aorta is somewhat unfolded and tortuous . Overall heart size is difficult to assess given the large right pleural collection .