Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Aortic knob is calcified . Enlargement of the pulmonary artery is again noted bilaterally compatible with pulmonary arterial hypertension . Pulmonary vasculature is normal . Lungs are hyperinflated without focal consolidation . Minimal blunting of the costophrenic angles bilaterally likely reflects small bilateral pleural effusions , decreased from the previous study . No pneumothorax is present . Deformity of the right seventh anterolateral rib appears new in the interval , but potentially subacute .
    OUTPUT:
    
1 . Small bilateral pleural effusions , decreased from the previous exam . 2 . Enlargement of the pulmonary artery compatible with pulmonary arterial hypertension . 3 . Mild deformity of the right seventh anterolateral rib appears new in the interval , but may be subacute in nature . Clinical correlation is recommended .