Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Lung volumes are low . Overlying leads limits of best evaluation . Linear densities in lower lungs most compatible with atelectasis and bronchovascular crowding . Furthermore , subtle ground - glass opacity in the right lung base raises concern for an early pneumonia , possibly with a small right pleural effusion . Heart size appears mildly enlarged . The aorta is unfolded . An anchor at the right humeral head noted . Bones appear demineralized .
    OUTPUT:
    
1 . Subtle opacity in the right lung base is concerning for an early pneumonia in the correct clinical setting . 2 . Bibasilar atelectasis . 3 . Top - normal heart size .