Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear opacities at the lung bases are most suggestive atelectasis . The lungs are otherwise clear without consolidation or effusion . There is pulmonary vascular congestion without edema . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Bibasilar atelectasis and pulmonary vascular congestion without consolidation worrisome for pneumonia or edema .