Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are within normal limits allowing for patient rotation . Patchy bibasilar opacities are present as well as a linear focus of opacity in the periphery of the left lower lobe . No definite pleural effusion or pneumothorax .
    OUTPUT:
    
Bibasilar patchy opacities may reflect patchy atelectasis or aspiration . Followup radiographs may be helpful to exclude the possibility of an early focus of pneumonia .