Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a somewhat heterogeneous but generally diffuse mild interstitial abnormality suggesting slight pulmonary congestion . One of two views shows a slightly more confluent right upper lobe opacity of uncertain significance , quite vague , and there is also focal left infrahilar opacity . There is no definite pleural effusion or pneumothorax .
    OUTPUT:
    
Findings suggesting mild vascular congestion . More focal patchy right upper lobe and left infrahilar opacities of uncertain significance but possibly due to coinciding atelectasis or scarring . If developing infection is a clinical consideration then short - term followup radiographs could be considered .