Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy and right IJ central line tip overlying distal SVC again noted . No pneumothorax detected . Cardiomediastinal silhouette is similar , with sternotomy wires noted . Again seen is upper zone redistribution and diffuse vascular blurring . There is a small left lower effusion with patchy opacity at the left lung base , possibly slightly worse . The differential could include a pneumonic infiltrate . There is minimal atelectasis at the right base , slightly more pronounced in the right cardiophrenic region , similar to the prior study . No gross right effusion . On today 's exam , there is a balloon overlying the right upper quadrant , presumably representing a G - tube .
    OUTPUT:
    
Patchy opacity at the left base , overall similar the prior study , the possibly slightly worse . Differential diagnosis includes an infectious infiltrate . Patchy stranding at the right base , likely atelectasis . Early infiltrate is considered less likely but can not be entirely excluded . Mild upper zone redistribution and diffuse vascular blurring is consistent with CHF , similar to the prior study .