Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Right chest wall dialysis catheter is noted with its tip in the mid SVC region . Cardiomegaly is moderate . There is mild interstitial pulmonary edema without large effusion . No pneumothorax . No convincing signs of pneumonia . Mediastinal contour is normal . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Moderate cardiomegaly with mild interstitial pulmonary edema . Dialysis catheter appears to be positioned appropriately .