Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart is of top normal size with normal cardiomediastinal contours . The aortic knob is calcified . Patchy opacities in the lung bases are compatible with atelectasis or aspiration . Lung apices are obscured by the patient 's chin . No pleural effusion or pneumothorax . Osseous structures are diffusely demineralized . No radiopaque foreign body .
    OUTPUT:
    
Patchy bibasilar opacities , compatible with aspiration or atelectasis .