Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Dense airspace opacities involving both lungs with relative sparing of the left apex are overall unchanged in appearance . Cardiomediastinal silhouette including mild cardiomegaly is stable . There is no pleural effusion or pneumothorax . The left PICC is unchanged in position .
    OUTPUT:
    
No substantial change from prior