Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates borderline enlarged heart , stable since prior examination dated ___ . Hilar contours are within normal limits . No evidence of overt pulmonary edema . Wispy equivocal opacity projecting over the medial right lung base may represent an early pneumonia in the correct clinical setting . Otherwise the lungs are clear . Osseous structures demonstrate degenerative changes without an acute abnormality .
    OUTPUT:
    
Equivocal subtle opacity projecting at the medial right lung base , possibly representing an early pneumonia in the correct clinical setting . Otherwise unremarkable .