Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . The heart size is top normal with slight prominence of the main pulmonary artery . There is subtle opacity obscuring the left CP angle on the frontal view which has no correlate opacity on the lateral view and is therefore of doubtful clinical significance . Otherwise , no focal consolidation , effusion , or pneumothorax is seen . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Top normal heart size with prominence of the main pulmonary artery which could reflect pulmonary arterial hypertension for which clinical correlation is advised . No definite evidence of pneumonia .