Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . No pleural effusion is seen . There is a right infrahilar opacity , which may be due to aspiration and / or infection . Left lung is clear . Prominence of the right hilum is stable . The cardiac and mediastinal silhouettes are stable . There is no pleural effusion or pneumothorax . No evidence of free air is seen beneath the diaphragms .
    OUTPUT:
    
1 . No evidence of free air beneath the diaphragms . Prominence of the right hilum likely relates to patient 's known pulmonary hypertension . 2 . Right infrahilar opacity could be due to infection and / or aspiration .