Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes limits evaluation . A left chest wall Port - A - Cath is seen with its tip in the region of the mid SVC . A metallic stent projects over the right upper quadrant . Lower lung atelectasis noted . Difficult to assess lung bases for subtle pneumonia . No convincing evidence for pneumonia , large effusion or pneumothorax . The overall heart size is difficult to assess . Mediastinal contour is normal . Bony structures are intact . No free air seen below the right hemidiaphragm .
    OUTPUT:
    
Limited study with basal atelectasis .