Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an aortic core valve and a cardiac pacer . Moderate cardiomegaly is unchanged . Diffuse interstitial abnormality is unchanged since ___ . There is no focal consolidation , pulmonary vascular engorgement , pleural effusion or pneumothorax .
    OUTPUT:
    
1 . The interstitium is diffusely abnormal enlarged which may be related to pulmonary edema , however , the absence of pleural effusions and mediastinal venous engorgement raise the possibility of chronic interstitial lung disease . 2 . Moderate cardiomegaly is stable .