Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Right chest wall Port - A - Cath again noted with catheter tip extending to the upper SVC region . Midline sternotomy wires are again noted . There is a calcified ovoid structure projecting over the mediastinum likely a calcified lymph node . There is mild basilar atelectasis noted bilaterally . No focal consolidation concerning for pneumonia . No large effusion or pneumothorax is seen . Cardiomediastinal silhouette is stable . Bony structures are intact .
    OUTPUT:
    
Bibasilar atelectasis . No convincing evidence for pneumonia .