Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . Diffuse increased interstitial opacities are new compared to the previous chest radiograph , compatible with mild interstitial pulmonary edema . Known left upper lobe opacity is re- demonstrated , and a large right pleural effusion is similar compared to the previous CT . There is right basilar compressive atelectasis . Small left pleural effusion is also demonstrated . No pneumothorax is identified . Right VP shunt catheter is seen coursing along the right anterior chest , and into the right upper quadrant of the abdomen .
    OUTPUT:
    
New mild interstitial pulmonary edema . Unchanged left upper lobe lung opacity better characterized on the prior PET CT . Large right pleural effusion with right basilar atelectasis , and small left pleural effusion .