Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD device is again noted with single lead terminating in the right ventricle . Moderate cardiomegaly persists . The mediastinal and hilar contours are unchanged . Lungs remain hyperinflated without focal consolidation . No pleural effusion or pneumothorax is present . There is mild upper zone vascular redistribution without overt pulmonary edema . No acute osseous abnormality is detected .
    OUTPUT:
    
Mild pulmonary vascular congestion without overt pulmonary edema and unchanged cardiomegaly .