Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged , allowing for differences in technique , including a calcified aortopulmonary window lymph node . There is no pneumothorax or definite pleural effusion . There is mild perihilar congestion , but otherwise the lungs appear clear . Surgical clips project over the upper abdomen .
    OUTPUT:
    
Findings suggesting mild vascular congestion .