Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation . There is no large effusion . Left chest wall port is seen with catheter tip at the lower SVC . There is a vague rounded opacity projecting over the anterior left fifth - sixth intercostal space . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Mild height loss of a lower thoracic vertebral body is unchanged from prior CT .
    OUTPUT:
    
No definite acute cardiopulmonary process . Vague nodular opacity projecting over the left mid lung . This could be due to external material related to patient 's accessed left port however underlying pulmonary nodule is possible . Consider repeat exam with repositioning of the external catheter .