Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , the moderate left pleural effusion appears unchanged , but the retrocardiac opacification has increased , concerning for developing pneumonia . Heterogeneously increased density at the right base may represent an additional focus of pneumonia . There is no pneumothorax or pulmonary edema . The cardiomediastinal silhouette is within normal limits . Esophageal stent is in unchanged position . The endotracheal tube ends 4 .8 cm from the carina . The enteric tube passes into the decompressed stomach and outside of the field of view . The right - sided PICC line ends in the mid SVC .
    OUTPUT:
    
Increased right base and retrocardiac opacification , concerning for multifocal pneumonia .