Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Port - A - Cath resides over the right chest wall with catheter tip in the region of the low SVC . Lung volumes are low limiting assessment with right basilar atelectasis noted . Subtle retrocardiac density is noted which could represent an early pneumonia . No large effusion or pneumothorax . Cardiomediastinal silhouette appears stable . Bony structures are intact .
    OUTPUT:
    
Right lung base atelectasis . Subtle retrocardiac opacity which could represent an early left lower lobe pneumonia . Port - A - Cath in place .