Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right chest wall port is again seen with catheter tip projecting over the right atrium . There are low lung volumes with subsequent crowding of the bronchovascular markings . This may also result in atelectasis blunting the posterior costophrenic angles although small effusions are possible . Superiorly , the lungs are clear . The cardiomediastinal silhouette is stable . No acute osseous abnormalities , include a sclerosis of the lumbar vertebral body is partially visualized , compatible with metastases .
    OUTPUT:
    
Possible small pleural effusions . No definite superimposed acute cardiopulmonary process given low lung volumes .