Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Comparison is made with the next preceding AP portable chest examination of ___ . Marked cardiomegaly and status post sternotomy with evidence of bypass surgery as before . In the interval , the patient has received a permanent pacer located in left anterior axillary position . Connection exists with two intracavitary electrodes , one of which terminates in a position compatible with the right atrial appendage , the second lead reaches the apical portion of the right ventricle . The patient was unable to elevate her arms for the lateral view , but still well penetrated image allows exclusion of any significant pleural effusion in the posterior pleural sinuses . The pulmonary vasculature demonstrates an upper zone redistribution pattern , but there is no evidence of interstitial or alveolar edema . No acute parenchymal infiltrates can be seen .
    OUTPUT:
    
Permanent pacer placement with two intracavitary electrodes in appropriate position in the right atrium and the right ventricle . Stable cardiomegaly . No evidence of pneumothorax .