Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low with vascular crowding . A focal opacity projecting over the lower thoracic spine on the lateral projection could reflect pneumonia . Increased perihilar interstitial opacities bilaterally suggest mild pulmonary edema . The heart is moderately enlarged . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Focal opacity projecting over the lower thoracic spine could reflect a focus of atalectasis or pneumonia . Recommend follow - up to resolution . 2 . Low lung volumes and probable mild pulmonary edema . 3 . Moderate cardiomegaly is unchanged .