Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . The lungs are clear . There is no focal consolidation , effusion , or pneumothorax . The heart is moderately enlarged , similar to prior exam . The mediastinal contour is normal . No hilar congestion is seen . Imaged osseous structures are intact .
    OUTPUT:
    
Cardiomegaly without acute intrathoracic process .