Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is top - normal with mild unfolding of the thoracic aortic arch . Prominent engorgement of the pulmonary vasculature without interstitial edema . Right hilus is prominent . Blunting of the left costophrenic angle corresponding to scarring on same - day CT . Linear scarring in the left apex with prominent volume loss and secondary hyperexpansion of the left lower lobe accounting for increased lucency . . No pleural effusion or pneumothorax .
    OUTPUT:
    
1 . Prominent pulmonary vascular engorgement without interstitial edema . However , the right hilus is large and even with comparison to recent CT , lymphadenopathy or hilar mass can not be excluded given lack of IV contrast on that study . Further evaluation with contrast enhanced CT , if possible , is recommended . 2 . Left upper lobe scarring , volume loss and secondary hyperexpansion of the left lower lobe .