Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mild to moderately enlarged . Mild unfolding of the thoracic aorta is noted . The pulmonary vascularity is minimally prominent . Streaky left mid and lower lung opacities are probably compatible with minor atelectasis , but there is also a vague retrocardiac opacity . There is more widespread but patchy opacification involving the right lower lung , probably in the right middle lobe , raising concern for pneumonia .
    OUTPUT:
    
Basilar opacities worrisome for pneumonia in the appropriate clinical setting although lower airway inflammation , atelectasis or even aspiration are other etiologies that could be considered in the appropriate clinical setting . Although there is perhaps minimal vascular prominence , since opacities are focal in the lower lungs , pulmonary edema is doubted as the primary etiology but could be seen with an atypical pattern .