Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged . Paramediastinal opacification is redemonstrated , again compatible with prior treatment changes . Right - sided Port -A - Cath has been removed . There are ill - defined bibasilar airspace opacities , worse when compared to the prior study , which may represent aspiration or infection . No definite pulmonary vascular congestion is present . There is no pneumothorax . No acute osseous abnormalities are seen .
    OUTPUT:
    
Worsening bibasilar airspace opacities concerning for pneumonia or aspiration .