Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There are patchy airspace opacities in the mid to lower lungs as well as the right upper lung . The left upper lung is spared . Pulmonary vascularity appears within normal limits . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Heterogeneous airspace opacification . Although pulmonary edema could be considered , imaging findings are more suggestive perhaps of multifocal pneumonia or perhaps aspiration in the appropriate clinical setting .