Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Ther has been interval placement of the right chest wall port -a-cath with its tip located in the expected region of the low SVC . The VP shunt catheter projects over the right neck and chest , as on prior . Minimal left basal linear atelectasis is noted , slightly improved from prior . Otherwise , lings are clear . There is no effusion , or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process .