Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-erect frontal view of the chest was obtained . Left PICC terminates in the upper SVC , and tracheostomy and PEG are in stable position . Blunting of the left costophrenic angle is compatible with a small left pleural effusion , similar to prior . Retrocardiac opacity is compatible with atelectasis and similar to prior . Right basilar opacity has worsened medially , and a new patchy opacity has developed peripherally at the right lung base . No pneumothorax . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Stable small left pleural effusion and retrocardiac atelectasis . New focal peripheral right basilar opacity could reflect focal atelectasis or early pneumonia . Attention to this region on follow up CXR may be helpful .