Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Left chest wall port is seen with catheter tip at the RA SVC junction . Linear opacity at the right lung base only on the frontal exam is more conspicuous than on prior and is thought to be due to atelectasis . There is no large confluent consolidation , effusion , or pulmonary vascular congestion . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities detected .
    OUTPUT:
    
No definite acute cardiopulmonary process .