Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left subclavian approach Port - A - Cath is present with tip terminating in the right atrium . There is moderate cardiomegaly . The mediastinal contours are unremarkable . Increased perihilar haziness is present . There is no pleural effusion or pneumothorax . Lung volumes are lower than on prior studies . There is no focal consolidation concerning for pneumonia . Increased interstitial markings may indicate mild interstitial edema .
    OUTPUT:
    
Mild to moderate interstitial edema . No pneumonia .