Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The mediastinal and hilar contours appear unremarkable . There is patchy opacification of the left costophrenic sulcus suggesting a small pleural effusion . There may be a small pleural effusion on the right side , but not definite . The lungs appear clear aside from patchy left basilar opacities suggesting minor atelectasis . There is no pneumothorax . Mild degenerative changes are noted along the thoracic spine .
    OUTPUT:
    
Findings suggesting small bilateral pleural effusions without frank congestive heart failure . The heart at the upper limits of normal size .