Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new opacity within the medial right lung base obscuring the right heart border , findings which may reflect early developing pneumonia / aspiration and / or congestion . The remainder of the lungs are clear . There is no interstitial edema or large pleural effusions . Mediastinal and hilar contours are within normal limits . Mild cardiomegaly is unchanged . The descending thoracic aorta remains densely calcified though appears non-aneurysmal .
    OUTPUT:
    
New opacity within the medial right lung base concerning for aspiration / pneumonia and / or focal vascular congestion .