Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is peribronchial airspace opacity within the right middle lobe , which appears chronic . Small bilateral pleural effusions are probably present . There is moderate cardiomegaly , and calcification of the aortic knob . Chronic interstitial abnormality is again noted and may reflect chronic mild fluid overload .
    OUTPUT:
    
Chronic mild CHF and right middle lobe scarring with probable small bilateral effusions .