Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right Port - A - Cath tip terminates in the right atrium , unchanged from prior . Opacification in the left lower lobe has increased since the prior examination , best appreciated on the lateral projection . Findings likely reflect progression of post-radiation changes as described previously on recent chest CT , however , superimposed infection or aspiration is possible . The remainder of the lungs appear clear . There is no pneumothorax . No vascular congestion or large pleural effusions are evident . Cardiomediastinal and hilar contours are within normal limits . Elevation of the right hemidiaphragm has increased since the prior examination and may reflect worsening subdiaphragmatic metastatic disease .
    OUTPUT:
    
Possible left lower lobe pneumonia or abscess . Recommend oblique radiographs of the chest for further evaluation of the lung bases . Dr . ___ communicated the above findings and recommendations to ___ at 9 : 40 am on ___ by telephone .