Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are diffuse , bilateral airspace opacities , more severe on the left than the right . No pleural effusion , pneumothorax , or pulmonary edema is identified . The heart size is normal . The mediastinal contours are normal .
    OUTPUT:
    
Diffuse , bilateral airspace disease highly suggestive of pneumonia . In the setting of immunocompromise , PCP pneumonia can not be excluded .