Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine view of the chest provided . Low lung volumes cause mild bronchovascular crowding . There is no focal consolidation . Within the limits of a single supine view , there is no evidence of effusion or pneumothorax . Prominent interstitium is similar to prior . In addition , there is diffuse increase in interstitial markings . Cardiomegaly is moderate . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen . Left chest cardiac device and leads are in similar position compared to prior .
    OUTPUT:
    
1 . No pneumonia . 2 . Diffuse increase in interstitial markings may be due to edema , or possibly a diffuse infectious process .