Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable including mild cardiomegaly with a left ventricular configuration . There is again a poorly visualized substantial , possibly large , hiatal hernia with streaky left basilar opacification suggesting associated minor atelectasis . Elsewhere , the lungs remain clear . There are no definite pleural effusions . The bones appear demineralized . Thoracolumbar curvature appears stable with loss in height of one or more upper lumbar vertebral bodies , probably unchanged .
    OUTPUT:
    
Substantial hiatal hernia . No definite evidence of acute disease .