Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged including mild cardiomegaly with a left ventricular configuration to the heart . There is slight blunting of the right costophrenic angle which may reflect a subpulmonic effusion . There is a new mild interstitial opacity suggesting pulmonary edema in addition to a vague but focal lateral right apical opacity , the latter unchanged .
    OUTPUT:
    
1 . Findings suggesting mild vascular congestion . 2 . Focal but vague opacity in the right upper lung , which persists . When clinically feasible assessment with standard PA and lateral radiographs may be helpful . This appearance may be a focal form of edema , scarring but potentially pneumonia .