Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is prominence to the right perihilar region which may reflect prominent vasculature or lymphadenopathy . The lungs and pleural spaces are essentially clear without evidence of pneumothorax or pleural effusions . The heart is enlarged . There is a tortuous thoracic aorta . Aortic arch calcifications are seen . There is no evidence of pneumoperitoneum . Mild degenerative changes are seen throughout the thoracic spine .
    OUTPUT:
    
1 . Enlarged right hilum which may reflect lymphadenopathy vs . prominent enlarged pulmonary artery . This can be assessed non urgently by chest CT . Alternatively , prior imaging would be helpful to document stability . 2 . Cardiomegaly without evidence of acute intrathoracic process .