Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slightly increased density at the lung basez is may represent vascular engorgement or atelectasis . There is suggestion of increased density in the retrocardiac region , which also may be due to atelectasis . Heart size is enlarged . Aortic calcification is seen . No pneumothorax is detected . No frank pulmonary edema is detected but pulmonary vessels are engorged . Small effusion may be present . Dual - lead pacing hardware is noted . Hardware projecting over the right subcutaneous tissues is likely external to the patient .
    OUTPUT:
    
Pulmonary vascular engorgement .