Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , no definite interval change is detected . An enteric type tube is seen extending beneath the diaphragm off the film . Bilateral thoracic spine pedicle screws an rods are again noted . The cardiomediastinal silhouette is unchanged . There is upper zone redistribution , without overt CHF . Atelectasis at the left lung base is again noted , with obscuration of the left costophrenic angle , unchanged . Minimal atelectasis at the right base laterally may also be present . Suspect old healed right posterolateral rib fracture . Old healed right clavicular fracture is also present .
    OUTPUT:
    
No definite change compared 1 day earlier . No findings to confirm the presence of an aspiration pneumonia .