Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Persistent left upper lobe opacity consistent with left upper lobe collapse . Increasing left lower lobe opacities suggestive of possible aspiration , atelectasis or new pneumonia . Known right upper lobe mass is more fully characterized on CT . Persistent left pleural effusion . Left pneumothorax no longer detected . Port - A - Cath remains in place .
    OUTPUT:
    
1 . Left upper lobe collapse . See recent CT report which described an obstructing mass . 2 . Increasing left lower lower lobe opacity , which may represent atelectasis , aspiration , or pneumonia . 3 . Right upper lobe mass , more fully characterized on recent CT .