Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are reduced lung volumes which accentuates the size of the cardiac silhouette which is moderately enlarged . Apparent mediastinal widening is also likely secondary to low lung volumes , and otherwise appears relatively unchanged compared to the prior exam . There is mild pulmonary edema . Additionally , more focal consolidative opacity in the retrocardiac region is concerning for pneumonia . Small bilateral pleural effusions are noted . There is no pneumothorax . No acute osseous abnormalities are present .
    OUTPUT:
    
Retrocardiac opacity concerning for pneumonia . Mild pulmonary edema and small bilateral pleural effusions .