Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A focus of linear density along the expected location of the minor fissure may represent scarring or atelectasis . Tubular left lower lobe density emanating from the hilum may represent a dilated bronchus with mucoid impaction . No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . Heart size is within normal limits . The pulmonary arteries are borderline enlarged , suggestive of pulmonary arterial hypertension .
    OUTPUT:
    
1 . Left lower lobe mucoid impaction . 2 . Evidence of pulmonary arterial hypertension . Updated findings were reported to ___ by ___ by telephone at 2 :50 p .m . on ___ after attending radiologist review .