Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change . Slight increased opacity in the right lower lobe is nonspecific and probably atelectasis , less likely aspiration , and similar in appearance to ___ . No pleural effusion or pneumothorax . The heart is top - normal in size , overall unchanged . The descending thoracic aorta appears slightly tortuous or ectatic . The hila and pleura are stable in appearance . Stable flattening of the diaphragms suggests hyperinflation . The incompletely visualized spinal hardware in the lower thoracic and upper lumbar spine appears intact and it is grossly unchanged in position from ___ .
    OUTPUT:
    
No significant interval change - nonspecific opacity in the right lower lobe , similar dated ___ , probably atelectasis .