Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . A small left pleural effusion has decreased in size since ___ . There is minimal left lower lobe atelectasis . The right lung is clear . There is no pneumothorax . The heart size is normal . The central pulmonary arteries are enlarged .
    OUTPUT:
    
A small left pleural effusion has decreased in size since ___ . Enlarged central pulmonary arteries are unchanged since ___ and are suggestive of pulmonary hypertension .