Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Allowing for technique , the cardiac , mediastinal and hilar contours are unremarkable . There are opacities in both lower lungs , more extensive on the left than right , suggesting pneumonia , although aspiration is also a possibility to consider in the appropriate clinical setting . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Opacities at the lung bases , greater on the left than right , suggesting pneumonia or potentially aspiration could be considered .