Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Shallow inspiration accentuates heart size . New left basilar opacity , atelectasis versus developing pneumonitis . Minimal right basilar atelectasis is stable . Prominent left cardiophrenic angle fat pad . No pleural effusion . Normal heart size , pulmonary vascularity .
    OUTPUT:
    
Mild left basilar opacity , atelectasis versus pneumonitis