Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided Port - A - Cath terminates in the upper SVC without evidence of pneumothorax . There is slight blunting of the left costophrenic angle which may be due to a trace pleural effusion with overlying atelectasis . Subtle opacity at the left mid lung is nonspecific , underlying infection not excluded . No pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Trace left pleural effusion . Left mid to lower lung opacity is nonspecific but in the appropriate clinical setting , could relate to pneumonia or small airways disease .