Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Exam is limited by the patient body habitus . Lung volumes are low . Increased interstitial markings reflects mild - to - moderate moderate moderate pulmonary edema . No definite focal consolidations suggest a large pneumonia in background of edema and limited exam . No effusion or pneumothorax . Minimal larger heart is also overall unchanged .
    OUTPUT:
    
Low lung volumes and moderate pulmonary edema . A superimposed pneumonia can not be excluded with these limitations .