Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views have been obtained with patient in semi-upright position . Comparison is made with a similar PA and lateral chest examination obtained on ___ . The previously described cardiomegaly persists , rather unchanged . Position of previously described permanent pacer in left anterior axillary position unaltered . The pacer is connected to a single intracavitary electrode . The distal terminal wire enforcement is well identified and appears in unchanged position as identified on PA and lateral chest views . The distal point of the electrode points to the left and anteriorly which is indicative of the apical area of the right ventricle . Comparison of the pulmonary vasculature as seen on the frontal view demonstrates that the previously existing perivascular haze has decreased indicating improvement of pulmonary venous congestion . No new parenchymal infiltrates are seen , the pleural sinuses are free and no pneumothorax exists in the apical area .
    OUTPUT:
    
Unchanged position of single electrode ICD device in apical portion of right ventricle . To evaluate possible positional causes that may explain increasing thresholds , fluoroscopic evaluation of the distal catheter is recommended as the static routine PA and lateral chest views can not account for events during normal cardiac motion .