Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is within normal limits . The aorta is mildly tortuous . There are airspace opacities involving the majority of the right lung and at the base of the left lung concerning for multifocal infection . There is no evidence of pneumothorax . There may be a small left pleural effusion .
    OUTPUT:
    
Increased opacity throughout the right lung and minimally increased opacity at the base of the left lung is is concerning for multifocal pneumonia .