Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are again noted and there is relative elevation the right hemidiaphragm . Right - sided central venous catheter seen with tip over the right atrium , new since prior . There is no pneumothorax . There are diffusely increased interstitial markings throughout the lungs bilaterally . There is no effusion . Cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Right - sided central venous catheter with tip projecting over the right atrium . No pneumothorax . Increased interstitial markings which may be due to diffuse edema or atypical infection .