Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph obtained . The heart is mildly enlarged with a left ventricular configuration . There is no overt sign of pneumonia or CHF , though there may be mild interstitial prominence which could represent edema in the right clinical setting . No large effusion or pneumothorax is seen . Mediastinal contour appears grossly unremarkable . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly with LV configuration and possible minimal interstitial pulmonary edema . Please note evaluation limited due to portable AP technique .