Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are bilateral , right greater than left , heterogeneous lower lobe opacities with a small right pleural effusion . No left pleural effusion . Again seen is a 3 .2 x 3 .3 cm rounded opacity within the right upper lobe with a radiopaque clip which is unchanged since prior examination . Mild cephalization of vasculature is noted . Stable mild cardiomegaly which is obscured due to overlying parenchymal abnormality . Small right pneumothorax . No left pneumothorax . Mediastinal contour and hila are otherwise unremarkable .
    OUTPUT:
    
1 . Small right pneumothorax . 2 . Stable small right pleural effusion . 3 . Heterogeneous right lower lobe opacity may represent atelectasis , pneumonia , aspiration in the appropriate clinical setting . 4 . 3 .3 cm rounded right upper lobe opacity is consistent with known right upper lobe adenocarcinoma with CyberKnife clip . 5 . Stable mild cardiomegaly with mild vascular congestion .