Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate the lungs are well expanded , with prominent bilateral interstitial markings and Kerley B lines , compatible with interstitial edema . There is no pneumothorax , pleural effusion , or focal airspace opacity . The cardiomediastinal silhouette is stable in appearance , and a dual - lead pacemaker device is unchanged in position . The aorta is tortuous , with mild atherosclerotic calcifications . Enlargement of the bilateral hila is similar in appearance , compatible with known pulmonary arterial hypertension . Mild bibasilar atelectasis is noted .
    OUTPUT:
    
Interstitial pulmonary edema , increased since the prior study . Stable mild cardiomegaly .