Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Endovascular graft in the tortuous descending thoracic aorta has an unchanged configuration since ___ . Previously described ill - defined opacity in the right lower medial lung , which raised concern for pneumonia has substantially resolved . There are no other new opacities . No pleural effusion . Mild to moderately enlarged heart size is unchanged .
    OUTPUT:
    
Previously described right lower medial lung opacity , concerning for pneumonia has substantially improved . No new opacities in the lungs .