Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal . There is mild prominence of the main pulmonary artery which may be due to a component of pulmonary hypertension .
    OUTPUT:
    
Clear lungs . Slight prominence of the main pulmonary artery may relate to a component of pulmonary hypertension .