Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are stable . Right lower lobe opacity is persistent most likely represent a large area of atelectases . Increasing opacities in the left mid hemi thorax are likely atelectasis . Retrocardiac opacities have minimally increase could represent atelectasis or pneumonia . . There is no pneumothorax or pleural effusion . Degenerative changes in the thoracic spine and wedge - shaped deformities in the lower thoracic vertebral bodies are again noted .
    OUTPUT:
    
Bilateral lower lobe opacities likely represent atelectasis .