Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged with a left ventricular configuration . The mediastinal and hilar contours appear within normal limits . There is no pleural effusion or pneumothorax . There is a vague patchy increased right infrahilar opacity , probably within the right lower lobe , although seen on only one view . It is very similar to radiographs from ___ and is interstitial in character , although the more diffuse interstitial abnormality seems decreased since that time on more recent radiographs from ___ when the vague interstitial process in the right lower lobe was absent .
    OUTPUT:
    
Recurrent vague interstitial process in the right lower lobe which may reflect an unusual asymmetric pattern of mild pulmonary vascular congestion noting the pattern of change and clinical context .